Verizon I-545 with T-mobile sim Q&A - Verizon Samsung Galaxy S 4

I know this has been addressed a few times, but with the new radio's and T-mobile running on LTE bands I feel it can be addressed again.
I have been running a T-Mobile sim in my Verizon S4 for about 9 months now having 90% functionality of T-Mobile apps and after 4.3 using LTE with a few MMS hiccups that seem to have been ironed out.I have ran just about every ROM available here on XDA, and even attempted to write my own Rom a couple times with limited success. And every ROM I have ran was written for Verizon, I just changed the APN settings, and sometimes had to flash some other items to get them working 100%.
I have a few things I am working on trying to "fix" such as Hotspot and a few T-Mobile only apps. I have convinced my phone it is a SGH-M919 changing a lot of info in the build prop, which allows me to use the T-Mobile TV app. But being a trial and error kinda guy I don't know how much of my editing was necessary, or if I actually needed to change more to allow me to use the hot-spot app. I have bricked my phone to many times to count trying out Radio's and changing setting in the ROMs trying to make my I545 more a T-Mobile phone than a Verizon phone.
I have seen alot of "ports" such as the 4.4.2 GE that I am currently running ( http://forum.xda-developers.com/showthread.php?t=2643031 ). The first release I had amazing signal and no connection issues. But after the DEV (Danvdh) plucked away at it making it work better for Verizon and fixing a lot of Verizon data issues has started to have a couple signal issues here and there. Nothing that I would say broke the connection but definitely slowed a few things for me down.
Same for the INT build ( http://forum.xda-developers.com/showthread.php?t=2552605 ) from jrkruze it works amazing then started to slowly after updates not work as well as it did from his first release. The ROM got better but my "connection" got worse.
So on to my question:
What is being changed in the ROMs that make them better for Verizon? I know that I am part of a small majority of people here running a SIM and a network that it was never supposed to run on, but it does work and I would like to make it work as best as it can. I know I can go back and use the older versions of the ROMs but I like the other changes and I like being able to update.

justda said:
I have been running a T-Mobile sim in my Verizon S4 for about 9 months now having 90% functionality of T-Mobile apps and after 4.3 using LTE
Click to expand...
Click to collapse
How do you have LTE working? Correct me if I'm Wrong but TMO has LTE on 700/1700, the i545 doesn't support either of those bands. HSPA+ with a 4gLTE logo maybe?

snatale1 said:
How do you have LTE working? Correct me if I'm Wrong but TMO has LTE on 700/1700, the i545 doesn't support either of those bands. HSPA+ with a 4gLTE logo maybe?
Click to expand...
Click to collapse
The AWS spectrum was unlocked for the i545 a few updates ago. Since TMobile LTE runs on the AWS band, a Verizon S4/i545 is capable of running TMobile LTE

AWS was unlocked with the MJ7 modem.
I get 29Mbps down 6.5 up defenitly not H+ the whole Seattle area is AWS so I am loving it. That combined with T-mobiles truly unlimited data I torrent on the go!

Do you receive SMS? I just switched about an hour ago to T-Mobile and everything works except for receiving SMS messages. Not sure how to get it working.
Sent from my SCH-I545 using Tapatalk

65vdub said:
Do you receive SMS? I just switched about an hour ago to T-Mobile and everything works except for receiving SMS messages. Not sure how to get it working.
Sent from my SCH-I545 using Tapatalk
Click to expand...
Click to collapse
you have to change your APN settings.
If you are interested I am working on something else, that would give us T-Mobile guys a working 4.4.2 TW ROM...
Go here: http://forum.xda-developers.com/showthread.php?t=2675384

justda said:
you have to change your APN settings.
If you are interested I am working on something else, that would give us T-Mobile guys a working 4.4.2 TW ROM...
Go here: http://forum.xda-developers.com/showthread.php?t=2675384
Click to expand...
Click to collapse
I changed my apn settings to T-Mobile fast LTE and did get LTE and HSPA+. And I'll check out the thread right now.
Sent from my SCH-I535 using xda app-developers app

Related

[Q]OOC Verizon S4 on Tmobile?

I've done some research on the topic but am having a hard time finding a definative answer on the topic.
I bought my phone thru Verizon (paid in full) intially to ensure I would keep my unlimited data plan. Since this purchase I've discovered that T-Mobile has s $30/mo plan that fits my lifestyle just fine. My intent is to sell my plan (craigslist/ebay/etc) to get out of our contract and make some $$$ on the side.
When I bought this phone 1 of the major draws I saw was that, even though it's a Verizon phone, it wasGSM compatible. I've read plenty of posts about users throwing in a ATT sim card and being good to go. On the tmobile side of things, the results aren't as clear.
So.... Long story short, I'm looking for a definative answer if the Verizon GS4 will fully work on T-Mobile's GSM network and if so, where might one find some guidance on what I need to do if there are any necessary steps involved.
Thanks in advance for any help.
Plain and simple... No, the Verizon GS4 will not work on Tmobile. Verizon is cdma and tmobile is gsm. It will not work
Sent from my DROID RAZR using xda premium
teqknique said:
I've done some research on the topic but am having a hard time finding a definative answer on the topic.
I bought my phone thru Verizon (paid in full) intially to ensure I would keep my unlimited data plan. Since this purchase I've discovered that T-Mobile has s $30/mo plan that fits my lifestyle just fine. My intent is to sell my plan (craigslist/ebay/etc) to get out of our contract and make some $$$ on the side.
When I bought this phone 1 of the major draws I saw was that, even though it's a Verizon phone, it wasGSM compatible. I've read plenty of posts about users throwing in a ATT sim card and being good to go. On the tmobile side of things, the results aren't as clear.
So.... Long story short, I'm looking for a definative answer if the Verizon GS4 will fully work on T-Mobile's GSM network and if so, where might one find some guidance on what I need to do if there are any necessary steps involved.
Thanks in advance for any help.
Click to expand...
Click to collapse
I'm a VZW customer and I work at T-Mobile. I've tried popping in my manager's T-Mobile micro sim-card into my VZW S4. The voice service worked flawlessly but there was neither 3G nor 4G connectivity. No idea why.
jkuczy16 said:
Plain and simple... No, the Verizon GS4 will not work on Tmobile. Verizon is cdma and tmobile is gsm. It will not work
Sent from my DROID RAZR using xda premium
Click to expand...
Click to collapse
WRONG! I'm using a Verizon GS4 on AT&T HSPA+ right now.
izgil82 said:
I'm a VZW customer and I work at T-Mobile. I've tried popping in my manager's T-Mobile micro sim-card into my VZW S4. The voice service worked flawlessly but there was neither 3G nor 4G connectivity. No idea why.
Click to expand...
Click to collapse
Did you change the APN's?
T-Mobile is NOT GSM. The only way would be change the apn settings to see if it will work.
Okay I guess I made a mistake, sorry for causing any confusion. Guess you really do learn something new everyday lol
Sent from my Nexus 7 using xda premium
sk337sk337 said:
WRONG! I'm using a Verizon GS4 on AT&T HSPA+ right now.
Did you change the APN's?
Click to expand...
Click to collapse
From what I read Verizon S4 will work with AT&T H+, but not T-mobile.. they only get edge even with the APN changed
TheAxman said:
T-Mobile is NOT GSM. The only way would be change the apn settings to see if it will work.
Click to expand...
Click to collapse
wait what? T-mobile is gsm..
TheAxman said:
T-Mobile is NOT GSM. The only way would be change the apn settings to see if it will work.
Click to expand...
Click to collapse
Yeah they are GSM
Sent from my LG-P880 using Tapatalk 2
So I am right about tmobile being gsm
Sent from my DROID RAZR
These questions are tricky. Work!? You have to define that word before you get your answer. Voice works and so as data IF you add APN manually (or if it comes automatically from T-Mo). Now by data you mean 2G(EDGE)? 3G(HSPA)? 4G(LTE)? It also depends on whether you are in an area where T-Mo has re-farmed 1900 HSPA. If you are in one of these areas then you got 3G for data. If not, 2G for you. No 4G anywhere for this phone on T-Mo.
teqknique said:
I've done some research on the topic but am having a hard time finding a definative answer on the topic.
I bought my phone thru Verizon (paid in full) intially to ensure I would keep my unlimited data plan. Since this purchase I've discovered that T-Mobile has s $30/mo plan that fits my lifestyle just fine. My intent is to sell my plan (craigslist/ebay/etc) to get out of our contract and make some $$$ on the side.
When I bought this phone 1 of the major draws I saw was that, even though it's a Verizon phone, it wasGSM compatible. I've read plenty of posts about users throwing in a ATT sim card and being good to go. On the tmobile side of things, the results aren't as clear.
So.... Long story short, I'm looking for a definative answer if the Verizon GS4 will fully work on T-Mobile's GSM network and if so, where might one find some guidance on what I need to do if there are any necessary steps involved.
Thanks in advance for any help.
Click to expand...
Click to collapse
Yes, it is %100 possible. It's involved...to the extent that it might not be for those who aren't willing to turn their phone into a PDA.
In this post I explain (condescendingly, because some guy was so sure it wasn't possible) that phones nowadays are capable of multiband...because it's just not cost effective for manufacturers to produce one phone for CDMA, then one for GSM, one for LTE, one for AWS bands, etc etc...you get the picture. If you look up the specs of the chips in the S4 (probably the same across the carriers) you'll see that it's a pentaband phone.
Short story long...I come from a time where there wasn't a "It's not possible"...my job bought me a VZ S4 which I plan on using with my Tmobile simcard...because I don't feel like carrying a Nexus 4 AND an S4...I'll post my progress in the forums for all to benefit from. Until then...
I only tested it for a few minutes.... but I did get lte on it but not sure about aws... on T-Mobile. Sorry I couldn't do a more extensive experiment.
Sent from my Nexus 4 using xda app-developers app
Yes it is possible. And it is actually not that much work.
#1 be rooted
#2 put in tmobile sim and restart phone (cant change apn with vzw sim)
#3 change the apn settings for voice and data to t mobile (google it)
I have been using a verizon i545 S4 on tmobile for 3 weeks now. I have voice text and 4g h+ data.
The S4 is global, even if verizon tries to lock it down.
justda said:
Yes it is possible. And it is actually not that much work.
#1 be rooted
#2 put in tmobile sim and restart phone (cant change apn with vzw sim)
#3 change the apn settings for voice and data to t mobile (google it)
I have been using a verizon i545 S4 on tmobile for 3 weeks now. I have voice text and 4g h+ data.
The S4 is global, even if verizon tries to lock it down.
Click to expand...
Click to collapse
how are you getting 4g? I'm only getting 2g ;-; i'v ebeen asking everywhere but everybody seems to think it cant be done i guess? I just get ignored by the usually helpful community.
I am also on hyperdrive, have you looked at their coverage map? And what apn are you using tmobile has 3. Standard phones, smart phones, and I believe one for hipsters aka apple? The proper apn starts with fast. (Its 645 in the morning google it yourself)
Another thing to consider, you might be getting 4g or h what ever, t mobile is half as fast as verizon. I had to use xposed framework to turn on the proper icons.
The steps I posted are all I did, other than being on hyperdrivre rom. Try setting to gsm as your preffered network?
Im sorry people have ignored this and claim its impossible, the tmobile guy in store actually got his manager to come use my phone after I got it working in front of him in store. The store manager told the employee I must be some super hacker and this isnt possible for normal people. All i did was imout the apn and the sim nothing crazy.
justda said:
Yes it is possible. And it is actually not that much work.
#1 be rooted
#2 put in tmobile sim and restart phone (cant change apn with vzw sim)
#3 change the apn settings for voice and data to t mobile (google it)
I have been using a verizon i545 S4 on tmobile for 3 weeks now. I have voice text and 4g h+ data.
The S4 is global, even if verizon tries to lock it down.
Click to expand...
Click to collapse
Will this always work with straight talk... I am now rooted
silentshadow310 said:
Will this always work with straight talk... I am now rooted
Click to expand...
Click to collapse
There is already a guide for straight talk here:
http://forum.xda-developers.com/showthread.php?t=2672843
Drake9897 said:
how are you getting 4g? I'm only getting 2g ;-; i'v ebeen asking everywhere but everybody seems to think it cant be done i guess? I just get ignored by the usually helpful community.
Click to expand...
Click to collapse
Sorry I have been out of the loop for a while with work and such... Did you ever get your 4G or LTE to work properly?
silentshadow310 said:
Will this always work with straight talk... I am now rooted
Click to expand...
Click to collapse
What this guy said above this comment. I know nothing about straight talk, and someone already wrote a guide on how to do it.
http://forum.xda-developers.com/showthread.php?t=2672843:good:

Verizon Note 2 on other carriers experience thread

I think this deserves a thread on its own and this shouldn't be closed because there are a lot of different ways this can go and a lot of different ideas behind using this effectively.
I was unhappy about the amount of money Verizon charged per month so I decided to end my contract and use my Note 2 on T-Mobile. Unfortunately, "T-Mobile" Note 2's are rather hard to come by so I stuck with the Verizon one and decided to unlock it. My question is:
For people using the Verizon Note 2 on other 'contract free' plans in the US:
1) Which rom works for you?
2) Did you modify settings to get data to work properly?
3) Which plan did you choose and how do you like it?
I'll start:
1) I'm using Tweaked. Out of the box, it works with T-Mobile SIM card and receives data as well. In San Diego I get HSPA+ most of the time, even indoors, so the rom works pretty well with different carriers. I did use the Verizon Tweaked rom as well.
2) It wasn't necessary. With the stock rom I wasn't able to consistently get data. I wasn't even able to get Edge to work properly. With Tweaked, I didn't have to modify the MMS settings so I can even send picture messages without issue.
3) I'm using the T-Mobile $30 plan with Wal-Mart. I get 100 minutes a month, 5GB of 4G data and unlimited text messages. Contrary to popular belief, text messages do not eat up my minutes. I send more than 50 text messages per day and I still have about 20 minutes left before my recharge and I'm about 3 weeks into this month.
Essenar said:
I think this deserves a thread on its own and this shouldn't be closed because there are a lot of different ways this can go and a lot of different ideas behind using this effectively.
I was unhappy about the amount of money Verizon charged per month so I decided to end my contract and use my Note 2 on T-Mobile. Unfortunately, "T-Mobile" Note 2's are rather hard to come by so I stuck with the Verizon one and decided to unlock it. My question is:
For people using the Verizon Note 2 on other 'contract free' plans in the US:
1) Which rom works for you?
2) Did you modify settings to get data to work properly?
3) Which plan did you choose and how do you like it?
I'll start:
1) I'm using Tweaked. Out of the box, it works with T-Mobile SIM card and receives data as well. In San Diego I get HSPA+ most of the time, even indoors, so the rom works pretty well with different carriers. I did use the Verizon Tweaked rom as well.
2) It wasn't necessary. With the stock rom I wasn't able to consistently get data. I wasn't even able to get Edge to work properly. With Tweaked, I didn't have to modify the MMS settings so I can even send picture messages without issue.
3) I'm using the T-Mobile $30 plan with Wal-Mart. I get 100 minutes a month, 5GB of 4G data and unlimited text messages. Contrary to popular belief, text messages do not eat up my minutes. I send more than 50 text messages per day and I still have about 20 minutes left before my recharge and I'm about 3 weeks into this month.
Click to expand...
Click to collapse
i just bought a verizon note 2 today for my at&t plan... i put my sim in and i had voice and text instantly. changed the APN and had hspa+ data.. didnt even need to root it to change the apn like i had read on another site. never knew these phones were unlocked out the box from verizon. is LTE possible im wandering with at&T? maybe with a new radio?? even so im fine with 4g, LTE would just be a plus.
Some tmobile users have had problems... I hope somebody can help those users out.
Hi Everyone,
I've been getting the shaft from Verizon with the Galaxy note 2 and paying the 200+ month bill as well. Anyone out there switch over to Page Plus, I've read that they piggy back off of Verizon's network. Any experience ? Thanks
Im curious about this as well, looking to move to tmobile with my note 2 until something else comes along.
Sent from my SCH-I605 using xda app-developers app
I'll be hopping over to AIO in a few weeks, I'll tell y'all how it goes.
Took my rooted verizon note 2 running alliance rom into a tmobile store today. I borrowed a sim card and booted up. It showed signal, but wouldnt recognize it. I switched to global mode in mobile networks and ran apn global fix and it showed h+, h, and 3g. Data was functional as was wifi. Should it show 4g or LTE as well?
Sent from my SCH-I605 using xda app-developers app
Tmobile 4g is h+ they are rolling out lte oz certain areas but without proper radios the Verizon note 2 will not get their lte and I don't suggest flashing another carriers radios. So hspa+ would be the best you could get.
Sent from my SCH-I605 using XDA Premium 4 mobile app
dysfunkshun said:
Im curious about this as well, looking to move to tmobile with my note 2 until something else comes along.
Sent from my SCH-I605 using xda app-developers app
Click to expand...
Click to collapse
It works pretty well, WHEN it works. Some roms are stubborn about sticking to Verizon and don't allow the switch. I was using Tweaked and it worked well. Tried out LiquidSmooth and couldn't get cell signal at all. Even with global mode.
Now I'm gonna try out Alliance because I want something more current.
flg8r90 said:
Hi Everyone,
I've been getting the shaft from Verizon with the Galaxy note 2 and paying the 200+ month bill as well. Anyone out there switch over to Page Plus, I've read that they piggy back off of Verizon's network. Any experience ? Thanks
Click to expand...
Click to collapse
I have my verizon note 2 flashed to pageplus have great service... everywhere that verizon has service my phone has service.. I only have 3g though . No 4g lte available for page+ yet... call sms mms and data all work.. im running jellybean latest rom
I used my Note 2 in Europe over the last week without many issues. Data was fine and worked well when I used it. Used SFR in France, Vodaphone in Spain, and T-Mobile in the UK. When switching between carriers, first connection to the network took a little bit, but beat out the new wife's SGS4 when connecting to the networks. When I got back to the US, my phone decided to refresh SIM data, but haven't had any issues other than that.
I'm in the process of trying to find an AOSP or 4.3 CM based rom that can use T-Mobile. All I've had luck with so far are TW based roms. As soon as I switch to a CM based rom, I'm not able to make or receive calls and apn settings can't seem to get data to stick.
imnuts said:
I used my Note 2 in Europe over the last week without many issues. Data was fine and worked well when I used it. Used SFR in France, Vodaphone in Spain, and T-Mobile in the UK. When switching between carriers, first connection to the network took a little bit, but beat out the new wife's SGS4 when connecting to the networks. When I got back to the US, my phone decided to refresh SIM data, but haven't had any issues other than that.
Click to expand...
Click to collapse
Anything special needed to run on T-Mobile? Or just drop the SIM in and change network mode?
Sent from my SCH-I605 using Tapatalk 2
Using mine with net10 work great fast data speeds
Sent from my SCH-I605 using XDA Premium 4 mobile app
Just wanted to update some experience:
AllianceROM :
1/5
Just not a very pleasurable experience. Data worked and calls worked fine but I experienced a lot of bugs just in relation to the rom itself. Re-flashes didn't help. Whenever I opened a picture in Gallery it tried to use this Accuweather overlay on the picture, would always crash gallery. GPS wouldn't work properly either. It was always stuck and GPS fix never seemed to do any good.
Pac-Man:
3/5
I want this rom to work really badly. Out of all the roms I've tried, it's the cleanest, fastest and picked up T-Mobile data just fine. Unfortunately it will not send SMS. I tried changing to global mode, GSM mode. 4G worked, 3G worked, data worked and even PHONE CALLS worked. But for some reason even after flashing again, rebooting, reinserting my SIM card, I could never get SMS messages to work. It has the correct MMS info but that's not the issue. It just will not send SMS.
At this point in time, the most consistent and best rom I used was Tweaked but I wanted to try out AOSP after the Nexus 5 came out and I missed the plain Android. I also get annoyed of the Galaxy excessive amount of 'hint' pop ups during initial flashing.
Just switched to net10 and it's not too bad. Data is a Lil slower but not much. Just popped in the sim and added apn info. Running beans 22.
Sent from my SCH-I605 using xda app-developers app
Anyone have any experience switching to AT&T running on CM? Looking to go prepay due to Verizon not have LTE for those plans.
Straight Talk just shut off the data on my VZN Note 2
I've been using my Verizon Samsung Galaxy Note 2 on Straight Talk for several months without any problem. I did the Bring Your Own Phone thing just as they advertised. I never had any problem until 2 days ago when they shut off my data. When I called them, they said my phone and ALL Verizon phones were not compatible with S.T.
I asked why I was able to use it just fine and then all of a sudden they nixed my data. Not the voice or text. Just the data. They only repeated the same prewritten jargon about Verizon phones not being compatible with Straight Talk.
Does anyone have any suggestions?
notyette said:
I've been using my Verizon Samsung Galaxy Note 2 on Straight Talk for several months without any problem. I did the Bring Your Own Phone thing just as they advertised. I never had any problem until 2 days ago when they shut off my data. When I called them, they said my phone and ALL Verizon phones were not compatible with S.T.
I asked why I was able to use it just fine and then all of a sudden they nixed my data. Not the voice or text. Just the data. They only repeated the same prewritten jargon about Verizon phones not being compatible with Straight Talk.
Does anyone have any suggestions?
Click to expand...
Click to collapse
Man, that sucks... I wonder how they found out you are using the Version phone. Just curious which ROM are you using?
I may switch to T-Mobile after my contract ended too.
cainG2x said:
Just switched to net10 and it's not too bad. Data is a Lil slower but not much. Just popped in the sim and added apn info. Running beans 22.
Sent from my SCH-I605 using xda app-developers app
Click to expand...
Click to collapse
Do you also get the + before the number? Example : +123 456 6789.
I get it like that and when I try to redial that same number with the +
I get an error.
Can you also tell me your apn info please?

Key Notes for Verizon Galaxy S4 (AWS LTE) on T-Mobile's Network

After happily using my 'old' S4 on T-Mobile with HSPA+ since having the Note 3 as my primary line, I was naturally excited to update the baseband and unlock Band 4 LTE. However I noticed some caveats which I've now solved which will undoubtedly confuse everyone at some point.
Assuming you've got the correct APN for T-Mo (fast.t-mobile.com) and naturally install the SIM, if your phone is on global you will happily see working LTE but not so fast (no pun intended). If you call or text, it fails. If you quick check your About -Status in settings and look under network it will say say Unknown and not T-Mobile. Why? Essentially you're in LTE data only mode because by default the baseband is looking to connect to CDMA for everything else in the CDMA/LTE marriage that is Verizon unique, which obviously won't work here. The assumption otherwise is that you will only need GSM if traveling internationally so it never looks for LTE with GSM.
The quick easy fix is to drop out of Global back to the GSM/UMTS setting, which will bring everything back, network restored to T-Mobile, but now it won't use LTE again, lame.
Luckily there is a fix. Use the PhoneInfo app or however you prefer to get to the Testing App. Under device information change the dropdown to LTE/GSM (auto PRL). Toggle airplane mode or restart. When it comes up you should be on LTE and quick check settings again you'll see T-Mobile, and everything will work. So far this seems to hold pretty well.
EDIT: Note: This works for TW Roms. I have not had success in CM10.2. In CM I've only gotten LTE data (wrongly labeled Verizon) and nothing else. Doesn't even pick up my phone number regardless of settings used.
Can you send me the link to the TW rom you are using for this? Thanks!
A walk through would be nice
Sent From The Future
majorlag said:
Can you send me the link to the TW rom you are using for this? Thanks!
Click to expand...
Click to collapse
Just stock actually. Nothing special.
killajoe said:
A walk through would be nice
Sent From The Future
Click to expand...
Click to collapse
Use this app, hit Device Information, and change the dropdown to LTE/GSM (auto PRL). Given the simplicity not sure you need much more of a walk through than that. A video would require a bunch of editing to blot out IMEI and phone #s.
zepfloyd said:
Use this app, hit Device Information, and change the dropdown to LTE/GSM (auto PRL). Given the simplicity not sure you need much more of a walk through than that. A video would require a bunch of editing to blot out IMEI and phone #s.
Click to expand...
Click to collapse
I am using this app and it is great. When it works, it would show T-Mobile as Net. Op instead of Unknown. Only issue I am seeing is that 4G LTE signal is not so great over where I am at and once in a while it would drop to H+ and then get back to LTE. During that cycle, the Net. Op would become Unknown again. Wish there was a way to fix this permanently like tricky the SMS app to send GSM or whatever it is causing Net Ops to be unknown.
majorlag said:
I am using this app and it is great. When it works, it would show T-Mobile as Net. Op instead of Unknown. Only issue I am seeing is that 4G LTE signal is not so great over where I am at and once in a while it would drop to H+ and then get back to LTE. During that cycle, the Net. Op would become Unknown again. Wish there was a way to fix this permanently like tricky the SMS app to send GSM or whatever it is causing Net Ops to be unknown.
Click to expand...
Click to collapse
Couple of things. Remember as I started with the baseband in i545 when on LTE really wants to use CDMA as the default so when it's searching it's not going to obtain GSM as instantaneous As it otherwise would. Don't see any specific way of that getting patched ever as we're going against the grain of how it's typically supposed to be used. If you are on a fringy area for it, you may be better off just leaving LTE off, H+ speeds are practically the same anyway. Tmo is only using 3-5mhz channels for band 4 as they use other channels too so for us it's not going to be superfast like Verizon on average anyway.
My phone is in Global mode, I have fast LTE internet and calls/texting works just fine. I am using a Verizon S4 with MJ7 and a T-Mobile simcard. No need to change anything except the APN and switch to Global.
elite-fusion said:
My phone is in Global mode, I have fast LTE internet and calls/texting works just fine. I am using a Verizon S4 with MJ7 and a T-Mobile simcard. No need to change anything except the APN and switch to Global.
Click to expand...
Click to collapse
Stock?
Sent From The Future
yep, cant really install anything on MJ7 since there is no official root even, so yeah, bone stock. Fastest I have gotten the internet to be was 25-26mbps download which isnt great, but for a cellphone is more than enough lol
So maybe the MK7 bootloader fixes this SMS issue...
How is this holding on for u ? I got it to work one time with hyperom and I restarted and it doesn't want to work. I did however get it working completely on a mj7 ROM and gummy kikat ROM. Weird.
Sent from my SCH-I545 using xda app-developers app
If you happen to have an MDK and want to run CM10.2 with GSM service run the ATT "I337" ROMS, fixes all the Verizon CDMA quirks
Black6spdZ said:
If you happen to have an MDK and want to run CM10.2 with GSM service run the ATT "I337" ROMS, fixes all the Verizon CDMA quirks
Click to expand...
Click to collapse
I did that and it kept failing.... TWRP recovery just would not get it to take.
So I flashed the MJ7 rom again and I got it working on it. I'm not sure why it didn't work on hyperom. Very weird. Tried the method and nothing. But I tried the method on mj7 ROM and it works perfectly. Weird weird weird.
Sent from my SCH-I545 using xda app-developers app
420haxr said:
How is this holding on for u ? I got it to work one time with hyperom and I restarted and it doesn't want to work. I did however get it working completely on a mj7 ROM and gummy kikat ROM. Weird.
Sent from my SCH-I545 using xda app-developers app
Click to expand...
Click to collapse
so using the 4.4 gummy rom you were able to connect to LTE / HSPA+ networks easily? And SMS / MMS worked just fine? Upon trying with the MJ7 update, non-rooted, I could only connect to Edge services under the GSM profile. Using global would barely warrant the HSPA band.
zepfloyd said:
After happily using my 'old' S4 on T-Mobile with HSPA+ since having the Note 3 as my primary line, I was naturally excited to update the baseband and unlock Band 4 LTE. However I noticed some caveats which I've now solved which will undoubtedly confuse everyone at some point.
Assuming you've got the correct APN for T-Mo (fast.t-mobile.com) and naturally install the SIM, if your phone is on global you will happily see working LTE but not so fast (no pun intended). If you call or text, it fails. If you quick check your About -Status in settings and look under network it will say say Unknown and not T-Mobile. Why? Essentially you're in LTE data only mode because by default the baseband is looking to connect to CDMA for everything else in the CDMA/LTE marriage that is Verizon unique, which obviously won't work here. The assumption otherwise is that you will only need GSM if traveling internationally so it never looks for LTE with GSM.
The quick easy fix is to drop out of Global back to the GSM/UMTS setting, which will bring everything back, network restored to T-Mobile, but now it won't use LTE again, lame.
Luckily there is a fix. Use the PhoneInfo app or however you prefer to get to the Testing App. Under device information change the dropdown to LTE/GSM (auto PRL). Toggle airplane mode or restart. When it comes up you should be on LTE and quick check settings again you'll see T-Mobile, and everything will work. So far this seems to hold pretty well.
EDIT: Note: This works for TW Roms. I have not had success in CM10.2. In CM I've only gotten LTE data (wrongly labeled Verizon) and nothing else. Doesn't even pick up my phone number regardless of settings used.
Click to expand...
Click to collapse
how did you update and unlock to baseband 4? What developer makes the PhoneInfo app? thanks
---------- Post added at 08:20 PM ---------- Previous post was at 08:16 PM ----------
elite-fusion said:
My phone is in Global mode, I have fast LTE internet and calls/texting works just fine. I am using a Verizon S4 with MJ7 and a T-Mobile simcard. No need to change anything except the APN and switch to Global.
Click to expand...
Click to collapse
Are you actually getting "LTE" or reframed 4G?
please school me how to change apn.
well let me give you a trick, flash an i9505 rom which you can find them here http://forum.xda-developers.com/galaxy-s4/i9505-develop
then flash any verizon kernel (because if you just flash an at&t or t-mob rom it wont reboot it will say triangle and not authorized verizon software)
dont forget to update your baseband to lastest then you can enjoy LTE (and fast) without any problems.
if you get and prop. issues while flashing international roms just change the "updater-script" first line to :
assert(getprop("ro.product.device") == "jfltevzw" || getprop("ro.build.product") == "jfltevzw"
then you can flash anything you want.
Here is how I did it
Here is how I did it, but needs some minor updates since then. Please let me know if anyone tries it and is happy with the result.
http://forum.xda-developers.com/showthread.php?t=2560128
zepfloyd said:
Use this app, hit Device Information, and change the dropdown to LTE/GSM (auto PRL). Given the simplicity not sure you need much more of a walk through than that. A video would require a bunch of editing to blot out IMEI and phone #s.
Click to expand...
Click to collapse
App wont open for me.
Running a rooted stock MK2.
any ideas?

[Q] A way to get 4G or 4G LTE on Verizon Galaxy S4?

I have a Verizon Galaxy S4 rooted and running the Darthstalker S4 Rom. I recently got an ATT sim card to put into my device because they were second best with the signal where I live. Which is the US. What I want to know, Is there a way to get 4G or 4G LTE on my device with ATT? I know 4G is here because my cousin is with them and has 4G LTE. Ive tried a few APN settings to no avail. Also every once in awhile I completely lose service because it starts searching for a service to run on again. All I get is H or H+ and half of the time, I dont even get that. That data never really works on that. Especially H. Also, I never get 3G either. Sorry if this is long, Im just at an end where I cannot find an answer. Any help would be greatly appreciated. Thanks
mouthymotor said:
I have a Verizon Galaxy S4 rooted and running the Darthstalker S4 Rom. I recently got an ATT sim card to put into my device because they were second best with the signal where I live. Which is the US. What I want to know, Is there a way to get 4G or 4G LTE on my device with ATT? I know 4G is here because my cousin is with them and has 4G LTE. Ive tried a few APN settings to no avail. Also every once in awhile I completely lose service because it starts searching for a service to run on again. All I get is H or H+ and half of the time, I dont even get that. That data never really works on that. Especially H. Also, I never get 3G either. Sorry if this is long, Im just at an end where I cannot find an answer. Any help would be greatly appreciated. Thanks
Click to expand...
Click to collapse
Try flashing the latest Modem, it seems to to support the ATT LTE Bands. I have used an AIO sim in both a VZW GS4 and LG G2 and both get LTE. It doesn't seem to switch very quickly either. Also make sure you are have LTE/GSM selected for the radio.
My 2 cents
rinkde post
equake said:
Try flashing the latest Modem, it seems to to support the ATT LTE Bands. I have used an AIO sim in both a VZW GS4 and LG G2 and both get LTE. It doesn't seem to switch very quickly either. Also make sure you are have LTE/GSM selected for the radio.
My 2 cents
Click to expand...
Click to collapse
Could you point me into the right direction? Also, I can only choose GSM, or LTE. Not both at the same time. And GSM only works
mouthymotor said:
Could you point me into the right direction? Also, I can only choose GSM, or LTE. Not both at the same time. And GSM only works
Click to expand...
Click to collapse
Kinda dependent on the ROM but you might want to use the APP called Advanced Signal Status (Play Store).
From memory you can't since this model dosent support the other carrier's LTE/4g band. May be wrong but pretty sure that info is correct
Sent from my SCH-I545 using XDA Premium 4 mobile app

Flash AT&T Modem on G900T?

Can this be done? I ask because I am using the T-Mobile version on AT&T. LTE reception is not bad, it just can be better, especially in low signal areas? Does anyone have any information flashing the G900A modem for T-Mobile? I have searched and can't seem to find anything on this.
Radio and antenna wise, I believe they are the same device specs, so not like a number of years ago where there were antenna differences between them. T-Mobile radio supports all of T-Mobile and AT&T, AT&T radio however only partially supports T-Mobile (NO 4G AWS band, more limited LTE)
There are a number of people that have compared the two variants and no significant reception differences have been found
MattMJB0188 said:
Can this be done? I ask because I am using the T-Mobile version on AT&T. LTE reception is not bad, it just can be better, especially in low signal areas? Does anyone have any information flashing the G900A modem for T-Mobile? I have searched and can't seem to find anything on this.
Click to expand...
Click to collapse
risestar2 said:
Radio and antenna wise, I believe they are the same device specs, so not like a number of years ago where there were antenna differences between them. T-Mobile radio supports all of T-Mobile and AT&T, AT&T radio however only partially supports T-Mobile (NO 4G AWS band, more limited LTE)
There are a number of people that have compared the two variants and no significant reception differences have been found
Click to expand...
Click to collapse
Right. I understand that. But what I was asking if we could extract the AT&T modem from the G900A (AT&T Branded S5) and flash it on the T-Mobile S5 (G900T). That way the frequencies would be better optimized.
Now my T-Mobile S5 did pick up Band 4 LTE on AT&T and reception was excellent. This is mostly due to the fact that T-Mobile natively uses band 4 for LTE.
MattMJB0188 said:
Right. I understand that. But what I was asking if we could extract the AT&T modem from the G900A (AT&T Branded S5) and flash it on the T-Mobile S5 (G900T). That way the frequencies would be better optimized.
Now my T-Mobile S5 did pick up Band 4 LTE on AT&T and reception was excellent. This is mostly due to the fact that T-Mobile natively uses band 4 for LTE.
Click to expand...
Click to collapse
I doubt that has any effect at all. Frequencies don't get optimized at least not on your end. I think the phone does have a priority list for which bands to use but it automatically switches when one is better than the other.
Sent from my One using Tapatalk
luigi311 said:
I doubt that has any effect at all. Frequencies don't get optimized at least not on your end. I think the phone does have a priority list for which bands to use but it automatically switches when one is better than the other.
Sent from my One using Tapatalk
Click to expand...
Click to collapse
I don't know about that. Perhaps it is not "optimizing" but carriers definitely do something to their modems on smartphones to make them work best with their networks. While the T-Mobile S5 works almost flawlessly on AT&T, the AT&T S5 still gets better reception. Perhaps the difference is negligible, but its there.
MattMJB0188 said:
I don't know about that. Perhaps it is not "optimizing" but carriers definitely do something to their modems on smartphones to make them work best with their networks. While the T-Mobile S5 works almost flawlessly on AT&T, the AT&T S5 still gets better reception. Perhaps the difference is negligible, but its there.
Click to expand...
Click to collapse
have you compared both side by side?
kawaiichi said:
have you compared both side by side?
Click to expand...
Click to collapse
I am comparing my signal with the T-Mobile S5 from what I experienced on the AT&T S5. While signal difference in good reception areas is not noticeable, signal in lower reception areas is much weaker. The AT&T S5 would send texts messages almost 95% of the time at my work. With the T-Mobile S5, I am getting about a 10% success rate on text messages being sent.
slimc84 said:
I am comparing my signal with the T-Mobile S5 from what I experienced on the AT&T S5. While signal difference in good reception areas is not noticeable, signal in lower reception areas is much weaker. The AT&T S5 would send texts messages almost 95% of the time at my work. With the T-Mobile S5, I am getting about a 10% success rate on text messages being sent.
Click to expand...
Click to collapse
Yeah that's what I mean. But nonetheless, I still love the phone and this really isn't an issue the majority of the time. Hopefully soon, we can flash an AT&T modem.
MattMJB0188 said:
Yeah that's what I mean. But nonetheless, I still love the phone and this really isn't an issue the majority of the time. Hopefully soon, we can flash an AT&T modem.
Click to expand...
Click to collapse
The only way I have been able to increase texts going through successfully is by toggling airplane mode. I guess we will have to use that as a work around.
Having an AT&T modem on the Tmobile variant will make the device better handle connecting to LTE/HSPA networks and the phone will switch between frequencies them more efficiently. Now, I don't know if that's possible without bricking the phone.
daraj said:
Having an AT&T modem on the Tmobile variant will make the device better handle connecting to LTE/HSPA networks and the phone will switch between frequencies them more efficiently. Now, I don't know if that's possible without bricking the phone.
Click to expand...
Click to collapse
I think some guy did it with the Note 3. But thing is, the AT&T modem on the S5 has not been extracted.
MattMJB0188 said:
I think some guy did it with the Note 3. But thing is, the AT&T modem on the S5 has not been extracted.
Click to expand...
Click to collapse
Extracting the AT&T modem is not a problem I can get it quickly using the stock firmware file. But, still i think it will brick your tmobile s5.
daraj said:
Extracting the AT&T modem is not a problem I can get it quickly using the stock firmware file. But, still i think it will brick your tmobile s5.
Click to expand...
Click to collapse
How so? Would it be the same as flashing a T-Mobile modem?
slimc84 said:
I am comparing my signal with the T-Mobile S5 from what I experienced on the AT&T S5. While signal difference in good reception areas is not noticeable, signal in lower reception areas is much weaker. The AT&T S5 would send texts messages almost 95% of the time at my work. With the T-Mobile S5, I am getting about a 10% success rate on text messages being sent.
Click to expand...
Click to collapse
There's your answer right there. T-Mobile released a patch today to deal with poor SMS/MMS or texting issues. Doubt it has anything to do with signal.
Flash the latest T-Mobile update and then see it perform as you'd expect.
SeaFractor said:
There's your answer right there. T-Mobile released a patch today to deal with poor SMS/MMS or texting issues. Doubt it has anything to do with signal.
Flash the latest T-Mobile update and then see it perform as you'd expect.
Click to expand...
Click to collapse
MattMJB0188 said:
How so? Would it be the same as flashing a T-Mobile modem?
Click to expand...
Click to collapse
Well i was looking to this this with my t mobile s5 with no luck. like another guy said, in good signal areas signal doesnt change but i am in a bad signal area a lot and my phone jst doesnt switch frequecies like it should. I been using att on t mobile phones for a while and installing the att modem but with this one im having some trouble. i have the att modem.bin but when flashing it i get a bootloader response error
You're lucky to get an error and the bin file didn't flash! Please read and search more. There are many threads on xda about similar attempt types. Device-specific modem files cannot and should not be flashed on other devices. They are hardware specific and will cause your phone to stop working if you manage to get it to flash.
Setting up ATT APN settings will suffice for those using att Sim in a sm-g900t.
Sent from my SM-G900T using XDA Free mobile app
Commodore 64 said:
You're lucky to get an error and the bin file didn't flash! Please read and search more. There are many threads on xda about similar attempt types. Device-specific modem files cannot and should not be flashed on other devices. They are hardware specific and will cause your phone to stop working if you manage to get it to flash.
Setting up ATT APN settings will suffice for those using att Sim in a sm-g900t.
Sent from my SM-G900T using XDA Free mobile app
Click to expand...
Click to collapse
Yes i realize the risk, and I'm actually not too worried about them. I don't at all think the phone will stop working, however I still can't get the modem on here anyway. I have tried the tar, and bin with no luck. If anybody is willing to put something together I'm willing to test it out. Fortunately in my line of work, it wouldn't be a big deal to get another S5.
---------- Post added at 08:06 AM ---------- Previous post was at 08:03 AM ----------
Jtrain88 said:
Yes i realize the risk, and I'm actually not too worried about them. I don't at all think the phone will stop working, however I still can't get the modem on here anyway. I have tried the tar, and bin with no luck. If anybody is willing to put something together I'm willing to test it out. Fortunately in my line of work, it wouldn't be a big deal to get another S5.
Click to expand...
Click to collapse
Commodore 64 said:
You're lucky to get an error and the bin file didn't flash! Please read and search more. There are many threads on xda about similar attempt types. Device-specific modem files cannot and should not be flashed on other devices. They are hardware specific and will cause your phone to stop working if you manage to get it to flash.
Setting up ATT APN settings will suffice for those using att Sim in a sm-g900t.
Sent from my SM-G900T using XDA Free mobile app
Click to expand...
Click to collapse
I have made all the proper backups. Not to mention I'm not a noob to this, having built a few Roms myself.
Jtrain88 said:
Yes i realize the risk, and I'm actually not too worried about them. I don't at all think the phone will stop working, however I still can't get the modem on here anyway. I have tried the tar, and bin with no luck. If anybody is willing to put something together I'm willing to test it out. Fortunately in my line of work, it wouldn't be a big deal to get another S5.
---------- Post added at 08:06 AM ---------- Previous post was at 08:03 AM ----------
have made all the proper backups. Not to mention I'm not a noob to this, having built a few Roms myself.
Click to expand...
Click to collapse
If it's not taking in Odin, then I really don't think its going to work. Odin is like the master of all things Samsung for end users. The S5 has a lot of tampering prevention measurements made by Samsung. It wouldn't surprise me if the bootloader is doing a reference check with the modem to see if the modem matches the bootloader.
Also, I wouldn't go about flashing full ATT tar files to the T-Mobile S5. The partition tables are now different in the Galaxy S5 variants when in previous models they were the same. So flashing the ATT full tar could lead to your download mode being wiped.
What exactly is your problem? When you say "not switching frequencies" what exactly do you mean? Like going from LTE to HSPA+ or HSPA+ to LTE etc.
I have created an xposed module for myself that allows me to quickly switch my network preference at ease using a widget. I may share that once I tidy it up a bit. If your issue is being able to switch between HSPA+ LTE 2G etc then the widget should help you. I only use it to force 4G when in a low 4G environment or to force LTE when in low LTE environment.
BTW: What line of work do you do that you can simply get another S5? I'm jealous
elesbb said:
If it's not taking in Odin, then I really don't think its going to work. Odin is like the master of all things Samsung for end users. The S5 has a lot of tampering prevention measurements made by Samsung. It wouldn't surprise me if the bootloader is doing a reference check with the modem to see if the modem matches the bootloader.
Also, I wouldn't go about flashing full ATT tar files to the T-Mobile S5. The partition tables are now different in the Galaxy S5 variants when in previous models they were the same. So flashing the ATT full tar could lead to your download mode being wiped.
What exactly is your problem? When you say "not switching frequencies" what exactly do you mean? Like going from LTE to HSPA+ or HSPA+ to LTE etc.
I have created an xposed module for myself that allows me to quickly switch my network preference at ease using a widget. I may share that once I tidy it up a bit. If your issue is being able to switch between HSPA+ LTE 2G etc then the widget should help you. I only use it to force 4G when in a low 4G environment or to force LTE when in low LTE environment.
BTW: What line of work do you do that you can simply get another S5? I'm jealous
Click to expand...
Click to collapse
Yes I definitely wouldn't go as far as flashing att tar.... And sometimes when I lose signal it takes a heck of a lot longer to gain it back ad t mobile basebands as opposed to art ones. I get another phone about every month and a half to two months so I've definitely tested around on and and also yes when it switches from lte to hspa+ etc it doesn't switch it like any att phone I've had. Takes longer.
And as far as my line of work goes I just mean that I would be able to afford another one if this one broke.
Jtrain88 said:
Yes I definitely wouldn't go as far as flashing att tar.... And sometimes when I lose signal it takes a heck of a lot longer to gain it back ad t mobile basebands as opposed to art ones. I get another phone about every month and a half to two months so I've definitely tested around on and and also yes when it switches from lte to hspa+ etc it doesn't switch it like any att phone I've had. Takes longer.
And as far as my line of work goes I just mean that I would be able to afford another one if this one broke.
Click to expand...
Click to collapse
Might be taking longer due to the different radios. Weird though cause if it has an ATT sim and ATT APN configuration, it shouldn't have any delay and function like an ATT phone.
And yeah I'm jealous you can afford a new one if you broke this one takes me a year to save up in order to buy my next upgrade.

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