Bought a refurb SCH-I545 Verizon to run on Tmobile network. Created a new APN and have things working but signal is rather poor. Seems to hunt around a LOT from no signal to full signal and data 2G to 4GLTE. Not consistent at all. Many calls being missed and sometimes trying to call out, I have no signal. Tmobile is out of ideas. I think I have most settings right but something is either wrong with the phone or a setting is off.
Can anyone confirm?
I am considering rooting the phone to delete all the bloatware? I am not sure if the boot loader will be opened? I would not mind losing the Verizon boot screen and the "sim is not verizon" BS....
At first, tmobile thought the phone did not support 1,9ghz but all documents I can find say it is fully supported. Do I need some radio apps?
cobra112 said:
Bought a refurb SCH-I545 Verizon to run on Tmobile network. Created a new APN and have things working but signal is rather poor. Seems to hunt around a LOT from no signal to full signal and data 2G to 4GLTE. Not consistent at all. Many calls being missed and sometimes trying to call out, I have no signal. Tmobile is out of ideas. I think I have most settings right but something is either wrong with the phone or a setting is off.
Can anyone confirm?
I am considering rooting the phone to delete all the bloatware? I am not sure if the boot loader will be opened? I would not mind losing the Verizon boot screen and the "sim is not verizon" BS....
At first, tmobile thought the phone did not support 1,9ghz but all documents I can find say it is fully supported. Do I need some radio apps?
Click to expand...
Click to collapse
Have you tried asking in the T-Mobile S4 help forum?
If not, try posting your question here:
http://forum.xda-developers.com/showthread.php?t=2324421
You'll probably get better results.
Good luck!
Related
my friend tom got his galaxy s like two months ago. he has a even more plus plan with unlimited everything on tmobile and he used that in a iphone 3g for a year with no problems and he could roam with no issues on att.
with his new vibrant its not working! it takes forever to try to connect then gives a error. the sim should be good since it roams in two other unlocked phones..
for the note, his phone IS unlocked... that was the first thing we thought of..
the error is: unable to select network.. your sim card is not allowed to connect to this network
this phone is a quadband phone so it should work.. we have put a att legit iphone sim in it and it works great.. what gives? why can't he roam on this new phone when other phones do? running bionix rom.. have tried updates, wondering if anyone has any opinions or info
we've already tried changing network settings with *#0011#, gone into service mode *#*#197328640#*#* with no luck
edit: we've tried not allowing the phone to connect to our local att 3G band (1900) and use all other bands again with no luck. the phone connects to canada's rogers network tho.. weird..
anyone check this out yet?? anyone got it workin? any reports would be killer ...
we have tried more settings through service mode still with no luck. when we specify certain bands and leaving the att 3G local band unchecked, it will not hop on T-mobile with the setting! Crazy! not sure if it's the rom, radio version or kernel but we will keep tweaking and posting results.. if anyone is having this issue or has concerns any posts or signs of life would be cool lol
Same issue
Unfortunately, I don't have a solution, but I've been working on this same issue since september. I originally contacted tmo about the problem to see if they somehow hadn't provisioned my phone/account for roaming. Needless to say they were not much help. They suggested I exchange the phone for a new one, which I did, and I still have the same problem.
I'm in a rural area of california where tmo has roaming on att towers. My girl has tmo service with a different samsung phone and she can roam on att just fine. She can send/receive calls and text. I even put my sim in her phone, and it works, so I've pretty much narrowed the problem down to an issue with the vibrant itself.
My phone is not unlocked, so we've ruled that out. I'm running bionix fusion with ji2 modem now, but I've had the issue with the stock phone before ji6, and after ji6 ota. I've tried messing around with the service menu the same as you, and I haven't got anywhere either.
I have been able to get the phone to at least lock on to att by adding the apn internet2.voicestream.com, and it will get past the "not registered on network" message. Unfortunately, it won't complete a call or send a message, it just times out after about 15 seconds and drops back to the previous menu (depending on whether I tried to dial out of contacts, the call log, or the dialer). But it does not give me an error message, it behaves as if the call connected and immediately hung up.
I had given up on it for the past couple weeks, but I have time now to try and work it again. Let me know if you've gotten anywhere, and I'll do the same.
The fix is: when you're in an att roam area, set your phone to gsm 850 only via the service menu. If your phone doesn't auto lock on the att network, search for available networks and choose att. After that you should be able to send and receive calls and texts.
after yet some more messing around, still no luck. it's clearly a thing with tmobile not allowing roaming..... because i read many threads off the gooooogle that say tmobile is pretty much going away and any "contractless" plans don't have roaming so they don't lose money....
dickheads. at least he's grandfathered in with a good unlimited everything plan tho..
even if all this said, if anyone finds any info out post!
the other day i was out of tmobiles network coverage and on att voice and edge not 3g. i live in texas
this is with a stock vibrant jI6
tried the app RoamControl with no luck. it uses different tmobile bands when in "roam only" mode. anyone have any luck yet?
I recently unlocked my HTC Aria (Att) and am using it on T-Mobile but it will not connect to the data network i can text and call but not access the internet from tmobiles network. I have been trying to figure out how to make it connect and don't know what to do. I tried setting it up to a new VPN but i don't know if i did it correctly. I am aware that it will only be an edge connection but something is better than nothing. Is there anyone that could help me out?
mvineyard said:
I recently unlocked my HTC Aria (Att) and am using it on T-Mobile but it will not connect to the data network i can text and call but not access the internet from tmobiles network. I have been trying to figure out how to make it connect and don't know what to do. I tried setting it up to a new VPN but i don't know if i did it correctly. I am aware that it will only be an edge connection but something is better than nothing. Is there anyone that could help me out?
Click to expand...
Click to collapse
If you were trying to set up a VPN, that is the wrong option. You need to set up APN settings for T-Mobile. I'm sure if you search you will find the correct settings you need.
So an unlocked Aria's data will work with T-mobile?
Will an unlocked T-mobile device function fully with my AT&T sim card?
vicmora5 said:
So an unlocked Aria's data will work with T-mobile?
Will an unlocked T-mobile device function fully with my AT&T sim card?
Click to expand...
Click to collapse
Yes to both questions. That's what unlocked means.
The only thing that won't work is 3G data because AT&T and T-Mobile use different frequencies for 3G.
2G data will work fine.
vicmora5 said:
So an unlocked Aria's data will work with T-mobile?
Will an unlocked T-mobile device function fully with my AT&T sim card?
Click to expand...
Click to collapse
The answer is Yes and No. If your term 'fully' includes 3G data access then no in both cases you will not get 3G data speed. You will only be able to get Edge data, which is pretty slow. So if you need voice and text service and don't mind slow data speeds then go ahead.
Thanks. Well I actually have the problem that I don't get 3G on my Aria for whatever reason .-. Even though I emailed them and they said I should be able to get 3G all I have ever gotten is EDGE. l:
I asked this because I was looking at getting the new Sidekick, but I am seeing if it would be better to just go ahead and switch to T-Mobile, or staying with AT&T and buying an unlocked Sidekick.
vicmora5 said:
Thanks. Well I actually have the problem that I don't get 3G on my Aria for whatever reason .-. Even though I emailed them and they said I should be able to get 3G all I have ever gotten is EDGE. l:
I asked this because I was looking at getting the new Sidekick, but I am seeing if it would be better to just go ahead and switch to T-Mobile, or staying with AT&T and buying an unlocked Sidekick.
Click to expand...
Click to collapse
Does your Aria have the AT&T logo on the top right? Also, check the model number underneath the battery. If it says A6366 then it should support AT&T 3G frequencies. If it says A6380 then it won't.
How old is your SIM card? You may need a newer one.
drumist said:
Does your Aria have the AT&T logo on the top right? Also, check the model number underneath the battery. If it says A6366 then it should support AT&T 3G frequencies. If it says A6380 then it won't.
How old is your SIM card? You may need a newer one.
Click to expand...
Click to collapse
I already made a thread for this and couldn't figure out what was wrong, but what was weird was that like 30 mins ago I disconnected from my wifi because I moved my router and stuff, and I was getting G not E, but now that I did it again I am only getting E /:
That was the first time I saw I was getting G
And yes it's an AT&T one, it hasn't been too long since i've had it.
And the under the battery it says A6366
vicmora5 said:
I already made a thread for this and couldn't figure out what was wrong, but what was weird was that like 30 mins ago I disconnected from my wifi because I moved my router and stuff, and I was getting G not E, but now that I did it again I am only getting E /:
That was the first time I saw I was getting G
And yes it's an AT&T one, it hasn't been too long since i've had it.
And the under the battery it says A6366
Click to expand...
Click to collapse
I suspect the "G" you were seeing was for gprs, which if I am not mistaken is slower than edge. Somebody jump in and correct me if I am wrong. If you are running a stock rom, you would see a "3G" not just a "G" if you were actually getting 3G data connection.
vicmora5 said:
I already made a thread for this and couldn't figure out what was wrong, but what was weird was that like 30 mins ago I disconnected from my wifi because I moved my router and stuff, and I was getting G not E, but now that I did it again I am only getting E /:
That was the first time I saw I was getting G
And yes it's an AT&T one, it hasn't been too long since i've had it.
And the under the battery it says A6366
Click to expand...
Click to collapse
G is slower than E. It happens sometimes just because of the nature of wireless networks. Nothing to worry about. When you are getting 3G signal it will say "3G" or "H".
You should really do two things -- first make sure your area actually has 3G. Go to the coverage viewer on AT&T's website, click on "Data" at the top, then see if your area has dark blue ("Mobile Broadband" is what they call 3G on that page). Of course the other way to know is if you have any other AT&T phone that can get 3G signal at your location -- or perhaps a friend's phone.
If you are sure your area actually has 3G coverage, then I'd try going to an AT&T store and asking to switch to a new SIM card. Just explain that you can't get 3G signal on your phone and they should do it for free if the SIM card is old.
Good luck.
I am admittedly a noob when it comes to Android phones. I have had my i777 for a few months now and have successfully bricked it more than once. Having said that, I have found that the answers to my questions have always been on the board somewhere. I am having troubles figuring out where to go with this portion of the issue though. Having tried several different ROMs for my phone, I keep having the same issue. With any ROM, other than stock, I miss phone calls or text messages when my phone is locked and on Wi-Fi at home. If I'm out and about with my phone in my pocket and locked, it works normally. But, if I'm at home working at my desk and the phone is locked, I will not get text messages or phone calls. Notifications from apps like CNN continue, but nothing from the mobile network. I have followed the guide to return to stock and built my own jig that worked to reset my flash counter as I flashed before I read when I got the phone. (Former iPhone user that just assumed it was as easy as a jailbreak, really really dumb on my part)
I am a tech geek. I follow instructions well. I am sure the problem is with my phone and not the ROMs. My question for the forum, is where to begin troubleshooting the issue. I want to be able to use these ROMs.
Some info that may be helpful:
Baseband: I777UCKH7
Kernel: 2.6.35.7
I have tried the following in no particular order:
UCKK6-SHOstockV1.9.2noWipe
Serendipity_8.2
update-unnamed-v2.2.1-full
ICScrewD_2.1
TurkbeyRom-v33
Each has individual issues that I can deal with and learn to fix, but the phone issue I, obviously, cannot get past.
Have you set the phone to keep the wifi active when sleeping or locked?
Miami_Son said:
Have you set the phone to keep the wifi active when sleeping or locked?
Click to expand...
Click to collapse
No I have not. Does the wifi connection prevent the cell network from connecting?
cell network shouldn't disconnect at all if it is, swap it out could be bad phone. Also what is your signal level at your desk at home? Low signal normally causes missing of messages.
Puff3r said:
No I have not. Does the wifi connection prevent the cell network from connecting?
Click to expand...
Click to collapse
No, it doesn't.
Do you use any 3rd party apps like tasker?
When did this issue start? Perhaps there is an issue with the tower that serves your home. How strong is your cellular signal at home? I believe text messages (except MMS) are sent over the cellular network. Your being on wifi shouldn't matter (does being at home with wifi off and the phone locked still cause issues?).
I can't imagine other ROMs causing issues, though. If anything, they would mess up your data network only if they had the wrong APN settings for your area (for example, for a while, people using Unnamed didn't have data issues, except for a few like me who lived in certain areas with Cingular towers). Or maybe the stock modem files are better for you than the ones provided by the ROMs?
Maybe you have an old sim card that somehow has issues? You should be able to get a free one from at&t. Do you have another phone that you can test it with?
nh5 said:
cell network shouldn't disconnect at all if it is, swap it out could be bad phone. Also what is your signal level at your desk at home? Low signal normally causes missing of messages.
Click to expand...
Click to collapse
I keep a minimum of 3 bars and live near the center of a large city. As stated in the op, this is only happening on added ROMs never on stock. I have again reverted to stock (+root), since the op, and confirm that I am getting messages and calls at my desk at home with the phone locked.
****************************Edit for SoCaliTrojan post********************************************
I do not have any additional task managers installed, I've just always used the one built in. As for the SIM card, I am using the one that I got with the i777 at upgrade and get the 4G network when not on wifi, so I think I can rule it out. My wife has a Note that I have been drooling over, guess I will have to "borrow" it for "testing" when she gets home from work.
Also, I notice I am on baseband KH7 with Android version 2.3.4. I see mention of KK6 and 2.3.6 on the forums. I have avoided flashing the baseband, when possible, to keep from possibly bricking the unit. Is it possible that upgrading these could resolve the issue?
That is a very weird problem. Only thing I can suggest is compare the APN settings in root with a custom rom's settings. They should be identical, but check anyway.
Sent from my SGH-I777 using xda premium
Puff3r said:
As for the SIM card, I am using the one that I got with the i777 at upgrade and get the 4G network when not on wifi, so I think I can rule it out.
Click to expand...
Click to collapse
OK, I have to ask since seeing the above, do you have a plain SGSII or a SkyRocket?
Miami_Son said:
OK, I have to ask since seeing the above, do you have a plain SGSII or a SkyRocket?
Click to expand...
Click to collapse
It is branded GalaxySII on the back with model number sgh-i777.
Puff3r said:
It is branded GalaxySII on the back with model number sgh-i777.
Click to expand...
Click to collapse
Then it isn't connecting to 4G networks.
It's labeled as "4g" but really just multiple 3g connections to give you a faster overall speed. But you might want to just try getting a new sim card at your AT&T store, if that doesn't work, try a different modem (like KK6) the whole list/downloads are in the development section.
penguinlogik said:
It's labeled as "4g" but really just multiple 3g connections to give you a faster overall speed. But you might want to just try getting a new sim card at your AT&T store, if that doesn't work, try a different modem (like KK6) the whole list/downloads are in the development section.
Click to expand...
Click to collapse
I made AT&T upgrade me to a n LTE sim card. Our phone disent have LTE but the newer sim cards supposedly will make your speeds faster when LTE does come to your area due to it pushing HSPA+ faster than enhanced backhaul.
You said you live in the center of a big city maybe being surrounded by a lot of tall buildings could be causing havoc on your cell reception.I know at my work I can send and receive messages and calls everywhere except our breakroom but everyone else's phone works fine in the breakroom.
Sent from my GT-I9100 using xda premium
If I was wanting to pit a new modem on my sgs2 att phone what do I need to do?
Sent from my SAMSUNG-SGH-I777 using XDA
I'm overseas right now and I got a SIM card from work and slid it in to my VZW S4. I'm assuming I should have at least got a couple signal bars in the notification bar, as I have another phone with full signal sitting next to me. Also the SIM made a call from a GSM Galaxy note right before I put it in my phone.
With just the Cyta SIM in I get a message (that cannot be dismissed):
Phone activation
This SIM card is from an unknown source.
Click to expand...
Click to collapse
After changing my network mode to Global and adding the APN according to THIS, I am still not showing any signal bars. I was able to pull up a couple networks in the Network Operators menu, one being Cyta-Vodaphone but still no bars and no connection.
The phone is rooted and on 4.4.2.
Am I missing something?
QUESTION kind of related to the question below.
Hey Guys... If anyone is online, please reply.
I was wondering if there was a way to get the Verizon GS4 to be able
to work on the Metro PCS servers and towers. I know that they have
different types of network bands, but I was just trying to make sure
if there was any way to get the phone to work on that network with
a flashable something in ODIN. My Verizon GS4 is rooted and on the
ROM called Hyperdrive.
Any replies are welcomed. And for the question above, I'm sorry i do not
have an answer for you.
thepianoman77 said:
Hey Guys... If anyone is online, please reply.
I was wondering if there was a way to get the Verizon GS4 to be able
to work on the Metro PCS servers and towers. I know that they have
different types of network bands, but I was just trying to make sure
if there was any way to get the phone to work on that network with
a flashable something in ODIN. My Verizon GS4 is rooted and on the
ROM called Hyperdrive.
Any replies are welcomed. And for the question above, I'm sorry i do not
have an answer for you.
Click to expand...
Click to collapse
you might be able to get some 3g but i doubt any 4g
Verizon Samsung Galaxy S4 (SCH-I545), AT&T SIM: very low signal, no picture messaging
I recently switched from Verizon to AT&T, bringing the S4 I had on Verizon. At the AT&T store, they added a new SIM everything seemed to work OK except for a constant "non Verizon SIM" message.
However, upon taking the phone home, or anywhere else, my signal strength is too low to do anything at all. (It worked at the store only because they have an antenna on the top of their building) This is a phone problem and not a network problem as everyone else I know has excellent signal in these areas. The signal strength in my house is -113 dBm, 0 asu. And for the record, my signal strength with Verizon was fine, so this is AT&T SIM specific.
A possibly related problem is that I cannot send picture texts at all. I can sometimes receive them, but it's buggy. Regular SMS texts will sometimes go through, albeit very slowly with many dropped messages, due to the signal issue mentioned above.
The AT&T store has been absolutely worthless in helping me. They did confirm that my APN settings are correct at least.
I rooted the phone because I didn't really know what else I could try. I currently have the phone rooted using Odin, MobileGo, and Supersu using the tutorial found here (I did reflash the kernal back to OF1):
http://forum.xda-developers.com/galaxy-s4-verizon/general/samsung-s4-i545-verizon-of1-root-t3254434
I basically would like to know what settings I could change to try and fix this issue.
I'm not sure what the forum's policy is on "bumping" unanswered posts, so I apologize if this is inappropriate.
I am really at a loss though as to how to approach or fix this problem. I am rooted but don't know what settings I should play with.
I've bought an unlocked S5 to replace this one since my last post. So I am open to taking some more risky measures to get this now extra phone working (so long as they make logical sense).
Please let me know if there is any additional information I can provide. I am slowly trying to learn more about Android OS and cell phones, but it's a pretty daunting subject.
I have no links for you but search around and investigate the APN settings. Normally MMS issues are due to incomplete or incorrect APN settings on the affected device. It could also be contributing to you signal issues.
FernBch said:
I have no links for you but search around and investigate the APN settings. Normally MMS issues are due to incomplete or incorrect APN settings on the affected device. It could also be contributing to you signal issues.
Click to expand...
Click to collapse
Hi, I appreciate your response! I am using the APN settings listed for Android here:
https://www.att.com/esupport/article.html#!/wireless/KB424489
This is about the ONLY thing I'm sure I have configured correctly.
Although I will mention, that if I remove the AT&T SIMM card, the APN settings are removed and the phone defaults back to CDMA/LTE preferred network.