[Q] Mobile Network state Disconnected SGH-I727r - Galaxy S II Q&A, Help & Troubleshooting

Hey folks, I just recently run into an decent error, there are many people here with this error, but not like mine. I have the Samsung Galaxy S2 LTE SGH-I727r. I'm on Rogers Network. Problem is that I cannot use my data which is internet. I have 2GB of it. I can receive calls and text. I can also call back and text back. but the only thing doesn't work is my internet.
I'm running Custom rom I suppose its Sky ICS 4.2D-10.
My apn is checked "rogers"
and my mobile data is one.
Does anyone know a stable Custom rom for Samsung Galaxy S2 LTE SGH-I727r?

ComputerWiz204 said:
Hey folks, I just recently run into an decent error, there are many people here with this error, but not like mine. I have the Samsung Galaxy S2 LTE SGH-I727r. I'm on Rogers Network. Problem is that I cannot use my data which is internet. I have 2GB of it. I can receive calls and text. I can also call back and text back. but the only thing doesn't work is my internet.
I'm running Custom rom I suppose its Sky ICS 4.2D-10.
My apn is checked "rogers"
and my mobile data is one.
Does anyone know a stable Custom rom for Samsung Galaxy S2 LTE SGH-I727r?
Click to expand...
Click to collapse
Probably somewhere in the I727 forums. Definitely not any here in the I9100 forums.
EDIT to add: though you're looking for ROMs in the wrong forum, it sounds like your APN settings may have gotten corrupted. Check your APNs. Google what they are for Rogers. See if they match up.

decipaci supt
ctomgee said:
Probably somewhere in the I727 forums. Definitely not any here in the I9100 forums.
EDIT to add: though you're looking for ROMs in the wrong forum, it sounds like your APN settings may have gotten corrupted. Check your APNs. Google what they are for Rogers. See if they match up.
Click to expand...
Click to collapse
Oh okay thanks, sorry didn't know if there was a skyrocket section -.-" I should be looking better nextime.

Related

Calling all Canadians! Bell Telus and Rogers users.

Alright so ill start this of by saying, Picked up my note today and loving it so far. Got it rooted thanks to Da G and getting ready to get into roms.
Anyway im making this thread to see if anyone else has tried anything out on the non-AT&T notes(i.e I717M and what not). So far from what i have read people are developing mostly for the AT&T model and saying its not for bell rogers or telus. Now I have been in the samsung world for a while and when it comes to my galaxy there was always ways around this.
For instance most of my ROMs were made for the international version not my bell version. But as long as I kept a copy of the bell modem on my phone i could just flash that and the ROM worked great. So does anyone have a copy of the bell telus or rogers modem for the note? or know if there all the same?
Another example in the galaxy s world was the captivate(Same soft keys as our phones). A person with a captivate could flash an international ROM as long they made a soft key fix when they developed the ROM.
One of the main reasons I ask all of this is because i see so many N7000 ROMs up and running and am wondering what will and wont work.
Look forward to hearing from you all
adamtrace said:
For instance most of my ROMs were made for the international version not my bell version. But as long as I kept a copy of the bell modem on my phone i could just flash that and the ROM worked great. So does anyone have a copy of the bell telus or rogers modem for the note? or know if there all the same?
Click to expand...
Click to collapse
you can get all the carrier radio/modem, and even the kernel from carrier here:
http://forum.xda-developers.com/showthread.php?t=1506212
---------- Post added at 02:08 AM ---------- Previous post was at 02:05 AM ----------
and here: http://forum.xda-developers.com/showthread.php?t=1630843
---------- Post added at 02:10 AM ---------- Previous post was at 02:08 AM ----------
sorry, I also forgot this kernel: http://forum.xda-developers.com/showthread.php?t=1589389
Bell note here. Been. The at & t roms with no problem.
The only issue that I have is the Yellow Pages crap that appears in my contact list as well as at& t bloat depending on the rom. Easy enough to deal with though.
Aside from that, it's been perfect.
Currently on Team Perfection 4.0.4.
Sent from my SAMSUNG-SGH-I717 using xda premium
I forgot to add that I haven't had any issues with data speeds at all.
Also, Don't venture into the N7000 roms because they will not work.
Sent from my SAMSUNG-SGH-I717 using xda premium
The N7000 ROMs can hard brick your phone since the hardware if the two models are completely different. AS Far as ROMs go, most are based off the AT&T software simply because that's the only ICS leak we have available. But you can use any ROM for the i717 on your Bell Note. I have a Bell Note and flashed almost every ROM and never ran into any problems. Also, Ruth the help ofa lot of people on this sure, I've made stock images of the Bell, Telus, and Rogers Notes so we can always go back. Best if luck and don't hesitate to ask anything.
Thanks for the info, I get mine today and was wondering the same thing.
Yesterday I flashed my Rogers Branded Galaxy i717 with Bell Rom and Kernel and have not 1 issue. I chose to flash the rogers i717 with Bell because I use bell mobiletv and this was the only way to get this particular app to work. Again not 1 issue with data or anything else.
No Rooted device either. Just flashed using ODIN.
I'm currently running the UCLE2 Rom on my Rogers i717. I've noticed that I am not getting LTE where I should be. And GPS connectivity is shoddy at best.
I have a second i717 which is stock that is with me to compare (family member).
I am going to flash the Rogers modem to hopefully correct atleast the LTE issue. Anyone know if this would improve my GPS connectivity as well?
For a number of years I have been buying Canadian phones to use on ATT. Canadain ROMs have less restrictions than ATT. For instance tethering and NFC are not locked. Also after rooting my Roger's Note it took under a minute to remove the Rogers branding. (all except splash screen) I was left with a fully optioned unbranded ROM.
I did want to try the stock UCLE2 ROM out of curiosity but I thought it would not install because my phone was not an ATT I717. How did you install it eugenekim618? Personally I would rather wait for the Rogers ICS version. Keep checking everyday to see if it is available.
I have tried quite of a few of the ROMS on here with my Bell i717M, no problems at all so far, other than the "android.phone has stopped working" at startup, I don't know the cause but it only happens at boot.
DO NOT use N7000 roms! But all of the AT&T stuff has worked great for me.
Agoattamer said:
For a number of years I have been buying Canadian phones to use on ATT. Canadain ROMs have less restrictions than ATT. For instance tethering and NFC are not locked. Also after rooting my Roger's Note it took under a minute to remove the Rogers branding. (all except splash screen) I was left with a fully optioned unbranded ROM.
I did want to try the stock UCLE2 ROM out of curiosity but I thought it would not install because my phone was not an ATT I717. How did you install it eugenekim618? Personally I would rather wait for the Rogers ICS version. Keep checking everyday to see if it is available.
Click to expand...
Click to collapse
I followed the posts in the Dev section to Root the phone.
Then installed CWM.
The picked a ROM I thought was good and followed the instructions in it's respective post to install.
I've done a lot of ROM installs for the Dell Streak I used to have and for a Sony Xperia X10.
So I am not totally unfamiliar with the process. Just a matter of getting used to the delivery method for each manufacturer. And then, dealing with the quirks of a ROM that is not 100% for your carrier. Goes with the territory, right?
I tried to read all the posts in a given thread as much as I can.
So you are saying you didn't install the one click odin stock UCLE2 ROM?
Agoattamer said:
So you are saying you didn't install the one click odin stock UCLE2 ROM?
Click to expand...
Click to collapse
No, that doesn't work for non AT&T phones I believe. I tried it, and ODIN recognized the COM, but failed to install. From my readings, can't do the one click install on Rogers since it's not a Rogers ROM.
all custom roms should work no problem, ive flashed tons on my unlocked bell note.
its the stock odin files when you want to make sure you get the proper device.
Hey guys Ive flashed pretty much all the roms I can and some I cant lol. So far my experiances have encountered a few setbacks but nothing substantial and allot if not most of the bugs and glitchs occurring in the first & second gen of roms have been fixed or patched.
As far as roms go as was already mentioned as long as you stay away from n7000 model roms and stick to i727 youll be ok. With at&t roms I always seem to have signal and gps issues. Generally tho I find my signal problem will clear itself up on its own and I believe is actually just just caused by the fresh software 'settling in', even though my signal appears low or fluctuating speed testing always shows Im getting peak d/l & u/l speeds. If the signal doesnt seem to improve flashing the Bell stock modem via cwm always does the trick. Gps usually works great, very fast & accurate, when Im having location issues I use the 'faster fix' app from the market, I dont know about anyone elses experiance but allot of the times theres a problem the gps server isnt set to the normal 'north america pool' but servers Ive never seen before or set to an 'international pool'.
All in all besides signal headaches the only other recurring problems are the inherent and unpredictable random force closing of system apps. It can be pretty random but I find a few constant trouble makers to be at&t software update, android phone. At&t update can be disabled easily under applications in the main settings or I was able to actually remove it using 'rom toolbox's app manager but strangely not with root toolboxs remove system apps. For pretty much all other f/c problems the remedy is a running of 'fix permissions', there are a bunch of ways/apps to do it and Ive found using 'rom manager' works the best meanwhile rebooting into recovery and fixing permissions from there will actually cause more problems.
Ok so those are the most recurring and annoying issues Ive had to name a few but the list is too big to write merely because Ive tried just about every rom right from the sketchiest unstable first releases and everything in between lol so feel free to drop me line if your stuck on a problem cause I might be able to help.
But before I end this novel here lol I just flashed the new 'OnlyOne Beta2' rom from the development section and it runs great. The rom is super stable, very fast and features both fully functional S Voice app and fully functional S Notes app. If you havnt tried S Notes yet its awesome the new functions and abilities totally blew me away so I highly recommend you give this rom a try!
eugenekim618 said:
I'm currently running the UCLE2 Rom on my Rogers i717. I've noticed that I am not getting LTE where I should be. And GPS connectivity is shoddy at best.
I have a second i717 which is stock that is with me to compare (family member).
I am going to flash the Rogers modem to hopefully correct atleast the LTE issue. Anyone know if this would improve my GPS connectivity as well?
Click to expand...
Click to collapse
If you had LTE before and lost it through flashing a custom ROM or whatever then try changing your APN to your Carrier LTE network. If you never had LTE when you bought your phone, probably the seller gave you a wrong sim. tell her to give you a 403 LTE capable sim, the 401 is only 4G.
andronikal659 said:
If you had LTE before and lost it through flashing a custom ROM or whatever then try changing your APN to your Carrier LTE network. If you never had LTE when you bought your phone, probably the seller gave you a wrong sim. tell her to give you a 403 LTE capable sim, the 401 is only 4G.
Click to expand...
Click to collapse
Thanks for the tip. But I got everything running again. I did have LTE to start, and have a LTE sim card. The *#2263* certainly helped. And Flapjaxxx's GPS tools in his ROM helped me get the GPS back up to par.
eugenekim618 said:
Thanks for the tip. But I got everything running again. I did have LTE to start, and have a LTE sim card. The *#2263* certainly helped. And Flapjaxxx's GPS tools in his ROM helped me get the GPS back up to par.
Click to expand...
Click to collapse
ok now I just lost my LTE after flashing new ROM from Seraphim Stratosphere. How did you get it back. I factory wipe everything and flash Rogers modem and it doesn't work. How did you manage to get LTE back? btw I have a Canadian Note with Rogers. the Saurom ROM was canadian and I had LTE too.
andronikal659 said:
ok now I just lost my LTE after flashing new ROM from Seraphim Stratosphere. How did you get it back. I factory wipe everything and flash Rogers modem and it doesn't work. How did you manage to get LTE back? btw I have a Canadian Note with Rogers. the Saurom ROM was canadian and I had LTE too.
Click to expand...
Click to collapse
Try *#2263#
Then force select LTE, and select ALL. That should force the LTE connection. So watch the connection bars. You should see a loss of connection, then reconnect on LTE. Once that is established, do the code again, and just select automatic.
eugenekim618 said:
Try *#2263#
Then force select LTE, and select ALL. That should force the LTE connection. So watch the connection bars. You should see a loss of connection, then reconnect on LTE. Once that is established, do the code again, and just select automatic.
Click to expand...
Click to collapse
When I try dialing it, it says error can't find USSP or something like that... What does this mean?
Just to be clear that im doing the right thing. I go to the dialer and punch the code *#2263#. How do I "force select LTE"? will something popup for me to select it or should I go to settings/ wireless and networks... I don't have those options in "wireless settings", I only have APN settings...

Mobile Network State : Disconnected. Cannot make calls.

Greetings
Today I upgraded my ATT Galaxy S2 to the ICS rom that appeared recently with Odin3 1.85.
Everything went pretty smoothly until I realized whenever I tried to make a call nothing would happen, the confusing thing is my internet kept working on Edge (since I'm T-mo on an unlocked phone). I tried to check via de *#simlock# command if it was unlocked and indeed it seems to be.
Furthermore I tried to send a text message to myself and it seems to have gone through added to the fact that the internet is there, the only problem is the calls.
I checked the IMEI and it seems to be fine, I did a factory reset and nothing happened.
During my exploration of the phone I found that it said, as the title implies, Mobile Network State: Disconnected which freaked me out.
I also tried resetting the mobile networks to default but nothing is working I'm kind of desperate (I usually avoid posting as opposed as researching) and have been searching online for near 2 hours I would appreciate any help.
Thanks
SO many things wrong.
Terracio said:
Greetings
Today I upgraded my ATT Galaxy S2 to the ICS rom that appeared recently with Odin3 1.85.
Click to expand...
Click to collapse
ATT Galaxy S2 is the SGH-I777. You are in the GT-I9100 forums. If you really do have an I777, and flashed an I9100 firmware to your I777, then this is likely the source of your problems. The I777 and I9100 have SIMILAR hardware to where a flash wouldn't kill your phone, but things wouldn't work right. Sounds like what you are describing.
Terracio said:
Everything went pretty smoothly until I realized whenever I tried to make a call nothing would happen, the confusing thing is my internet kept working on Edge (since I'm T-mo on an unlocked phone). I tried to check via de *#simlock# command if it was unlocked and indeed it seems to be.
Click to expand...
Click to collapse
You say you have an ATT Galaxy S2, but here you say you're on T-Mobile. Are you in the US? If you're on the US, how did you get an ATT Galaxy S2 on T-Mobile? ATT phones are usually SIM locked. Also, T-Mobile has their own Galaxy S2 model, which is the SGH-T989. Totally different hardware. If you DO have an ATT model, and are on T-Mobile, then you are probably getting abysmal mobile data speeds. The ATT model will only get Edge speeds on T-Mobile's network, and vice versa, the T-Mobile model will only get Edge speeds on ATT's network.
EDIT: Oh, I re-read that. I see you recognize you will only get Edge on T-Mobile's network when using this device. But that doesn't answer my question. If you have an ATT model (SGH-I777) did you SIM-unlock it?
Terracio said:
Furthermore I tried to send a text message to myself and it seems to have gone through added to the fact that the internet is there, the only problem is the calls.
Click to expand...
Click to collapse
Again, if you actually have an ATT model (SGH-I777) and you flashed an I9100 firmware, you probably got modem files not meant for your phone.
Terracio said:
I checked the IMEI and it seems to be fine, I did a factory reset and nothing happened.
During my exploration of the phone I found that it said, as the title implies, Mobile Network State: Disconnected which freaked me out.
I also tried resetting the mobile networks to default but nothing is working I'm kind of desperate (I usually avoid posting as opposed as researching) and have been searching online for near 2 hours I would appreciate any help.
Thanks
Click to expand...
Click to collapse
Bottom line, check your phone model. Don't trust the boot screen or the About Phone details, as a firmware flash will change those. Look on the label under your battery. I'm guessing you have an SGH-I777, and you flashed a GT-I9100 firmware.
ATT's Galaxy S2 (SGH-I777) has its own forum.
T-Mobile's (SGH-T989) has its own forum too.
EDIT: Please let this be a lesson. Always be sure you are flashing a firmware meant for your specific model of phone.

[Q] AT&T Samsung Galaxy Note i717 Data Setup Problem on Straight Talk

I really need help with this one. I just bought an ATT Samsung galaxy note i717 to use with simple mobile. Unfortunately, simple mobile data speed is so slow that I decided to go with Straight Talk. I got the Straight Talk sim card last night and immediately pop it in my galaxy note. Signal strength look excellent, call quality was also great.
My excitement ended when I decided to set up my data through the APN. Unfortunately, when I open the APN tab, ATT appears but when I try editing so as to make the necessary changes, the APN cannot be edited!! I have tried everything and now am at a lost! I have called ST and they say it should work since infact my phone is an ATT phone. This phone is also unlocked. When I place the simple mobile sim card in the phone, I can definitely edit T-Mobile in the APN settings. I called Samsung Customer service, and was told that Straight Talk is not part of their support network.
Please people, I really need help configuring this problem. Any help out there will be highly appreciated!!
Kormasah7410
What happens if you hit the menu button ? Do you have the option to ADD APN ?
kormasah7410 said:
I really need help with this one. I just bought an ATT Samsung galaxy note i717 to use with simple mobile. Unfortunately, simple mobile data speed is so slow that I decided to go with Straight Talk. I got the Straight Talk sim card last night and immediately pop it in my galaxy note. Signal strength look excellent, call quality was also great.
My excitement ended when I decided to set up my data through the APN. Unfortunately, when I open the APN tab, ATT appears but when I try editing so as to make the necessary changes, the APN cannot be edited!! I have tried everything and now am at a lost! I have called ST and they say it should work since infact my phone is an ATT phone. This phone is also unlocked. When I place the simple mobile sim card in the phone, I can definitely edit T-Mobile in the APN settings. I called Samsung Customer service, and was told that Straight Talk is not part of their support network.
Please people, I really need help configuring this problem. Any help out there will be highly appreciated!!
Kormasah7410
Click to expand...
Click to collapse
Instead of editing.....MAKE A NEW ONE...lol
Do a search for ST or Straight Talk in the Note threads. I seem to remember reading something about the proxy needs to be deleted. Anyway, I think your answer is here. Just search some. Good luck.
EDIT: Here, I found something that might help. Try the second post suggestion, http://forum.xda-developers.com/showthread.php?t=1630402.
Im alsothinking about making the switch to straight talk. The speeds for SIMPLE MOBILE throttle from 6 Mbps to 120 Kbps on download speeds. Its truly not consistent. I got the SAUROM ROM with the Tmo_SGH_T989_VKL1_radio_ATTNOTE.zip tmobile modem at first. I called simple mobile and told them y the hell is my speeds to damn slow. As usual, they give the run around. So I to think it was the modem. So I change from GB to ICS and had the same result from different radio bands. I just purchase this sim card yesterday. On the 05/02/12. So I will be paying attention to this thread for answers.
NJBROTHA2K said:
Im alsothinking about making the switch to straight talk. The speeds for SIMPLE MOBILE throttle from 6 Mbps to 120 Kbps on download speeds. Its truly not consistent. I got the SAUROM ROM with the Tmo_SGH_T989_VKL1_radio_ATTNOTE.zip tmobile modem at first. I called simple mobile and told them y the hell is my speeds to damn slow. As usual, they give the run around. So I to think it was the modem. So I change from GB to ICS and had the same result from different radio bands. I just purchase this sim card yesterday. On the 05/02/12. So I will be paying attention to this thread for answers.
Click to expand...
Click to collapse
Good luck i never went over edge speeds with any of the mods hopefully is not the same for you was on simple moved to t-mobile prepay
Sent from my SAMSUNG-SGH-I717 using XDA
I have been running my i717 note on straight talk for the past month or so and am loving it. Had an Infuse before that. I am getting great speeds. All I did was add a new APN and then put the dot next to it once done.
I had tried simple mobile before though on a G2x but it was just horrid on speed. I tested the phone on the SM sim and an actual t-mobile sim. Difference in day and night. The SM one was actually faster if you forced edge speed!
Samsung Galaxy Note i717 Data Setup Problem on Straight Talk
Thanks so much guys for all of you advice. I was able add a new APN and it all workout. Infact I am currently enjoying 4G speed with clear reception on my i717 galaxy note since infact I am on ATT network. Super fast speed people! Simple mobile network was giving edge speed. ST is way better. Thanks again people.
kormasah7410 said:
Thanks so much guys for all of you advice. I was able add a new APN and it all workout. Infact I am currently enjoying 4G speed with clear reception on my i717 galaxy note since infact I am on ATT network. Super fast speed people! Simple mobile network was giving edge speed. ST is way better. Thanks again people.
Click to expand...
Click to collapse
C an you please share your APN settings?
I just got my Note!
Awaiting my sim card from ST, so I am very glad to hear things are working out for you!!!
uckfay said:
C an you please share your APN settings?
I just got my Note!
Awaiting my sim card from ST, so I am very glad to hear things are working out for you!!!
Click to expand...
Click to collapse
Your Sim will come with a pink card/insert with everything you need to know... My little brother just took my inspire over to straight talk and he has no complaints.
Sent from my SAMSUNG-SGH-I717 using XDA
uckfay said:
C an you please share your APN settings?
I just got my Note!
Awaiting my sim card from ST, so I am very glad to hear things are working out for you!!!
Click to expand...
Click to collapse
The instructions are printed on the card the SIM comes with. You can also find it on http://www.straighttalksim.com/support.php click on the Phone Programming tab.
Hey I'm waiting on my Straight Talk Sim that I ordered on 6/7. I havent even recieved a tracking number yet. But I wanted to know if any rom would work with Straight Talk? Also has anyone in the previous post gotten kicked off yet?
kormasah7410 said:
Thanks so much guys for all of you advice. I was able add a new APN and it all workout. Infact I am currently enjoying 4G speed with clear reception on my i717 galaxy note since infact I am on ATT network. Super fast speed people! Simple mobile network was giving edge speed. ST is way better. Thanks again people.
Click to expand...
Click to collapse
Can u post a speed test?
By the way, you can still use simple mobile with 4G speed, just flash a tmobile modem
Sent from my SAMSUNG-SGH-I717 using xda premium
sosmooth757 said:
Hey I'm waiting on my Straight Talk Sim that I ordered on 6/7. I havent even recieved a tracking number yet. But I wanted to know if any rom would work with Straight Talk? Also has anyone in the previous post gotten kicked off yet?
Click to expand...
Click to collapse
Why would you get kicked off? Do you mean for excessive data usage?
I've been on it for a couple of weeks, no problems here. But, I don't use a lot of data either. I try to stay on wifi when possible.
here are links for the modems
http://forum.androidspin.com/showthread.php/9154-MODEM-Samsung-Galaxy-Note-i717-Modems
kormasah7410 said:
Thanks so much guys for all of you advice. I was able add a new APN and it all workout. Infact I am currently enjoying 4G speed with clear reception on my i717 galaxy note since infact I am on ATT network. Super fast speed people! Simple mobile network was giving edge speed. ST is way better. Thanks again people.
Click to expand...
Click to collapse
hey man i hope you can help me out here i have a unlocked samsung galaxy note 1 sgh i717 and i am having the same problem you was having my talk is great but im having issues on my data my phone is 4g LTE smart phone but i can only seem to get g or e how can i get 4g? if you can help me out i would really appreciate it..my email is [email protected]
make sure you put:
"mms2.tracfone.com"
for the MMS proxy I stopped having issues receiving MMS after doing that not sure if they put that in their documentation yet with the SIM but one of the customer service agents told me to do that and it works for me.
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[Q] How do I get this to work with AT&T [/Q]

I read a few threads and am confused, so I thought I would just ask. I have a few 4G LTE devices for Verizon and am ready to switch to AT&T. Let's just say that Verizon and I had an argument and it is time to switch. Plus I would be saving over $50 to switch to AT&T with a month to month with a BYOP plan.
I visited the AT&T store today and had them insert a SIM into my S4. I get the error "This SIM card is from an unknown source" in the banner. I get a signal strength and a H for where the data symbol 4GLTE is. Then it drops the signal and refuses to have a data connection. At this time the APN settings were NOT adjusted. This was a straight out of the box S4 rooted on NC5 with Android version 4.4.2. After messing with the S4 for awhile he moved to the S3 and entered the proper APN settings. It pulled data, but only at EDGE speeds or 1X. Also, my last device, a Samsung Galaxy Tab 2, has no way of editing the APN settings. It is NOT rooted and is still on stock firmware.
My questions are these:
1. Can this be done?
2. What do I need to do to the phone(s)/tablet to make it work?
3. Will I be able to get 4G speeds?
I do not want to purchase phones with AT&T today because I just don't have the money. I already have these devices, I just want to swap them over. I am comfortable with flashing using ODIN and even so far as using safe-strap. I have flashed some custom roms, but my phone is a daily grind phone and I really want something that works 90% of the time.
Thanks in advance for any help!
EDIT:
None of the codes work either:
*#0*#
*#06#
ECT...
ghost0001 said:
I read a few threads and am confused, so I thought I would just ask. I have a few 4G LTE devices for Verizon and am ready to switch to AT&T. Let's just say that Verizon and I had an argument and it is time to switch. Plus I would be saving over $50 to switch to AT&T with a month to month with a BYOP plan.
I visited the AT&T store today and had them insert a SIM into my S4. I get the error "This SIM card is from an unknown source" in the banner. I get a signal strength and a H for where the data symbol 4GLTE is. Then it drops the signal and refuses to have a data connection. At this time the APN settings were NOT adjusted. This was a straight out of the box S4 rooted on NC5 with Android version 4.4.2. After messing with the S4 for awhile he moved to the S3 and entered the proper APN settings. It pulled data, but only at EDGE speeds or 1X. Also, my last device, a Samsung Galaxy Tab 2, has no way of editing the APN settings. It is NOT rooted and is still on stock firmware.
My questions are these:
1. Can this be done?
2. What do I need to do to the phone(s)/tablet to make it work?
3. Will I be able to get 4G speeds?
I do not want to purchase phones with AT&T today because I just don't have the money. I already have these devices, I just want to swap them over. I am comfortable with flashing using ODIN and even so far as using safe-strap. I have flashed some custom roms, but my phone is a daily grind phone and I really want something that works 90% of the time.
Thanks in advance for any help!
EDIT:
None of the codes work either:
*#0*#
*#06#
ECT...
Click to expand...
Click to collapse
Already answered in another thread.
k1mu said:
Already answered in another thread.
Click to expand...
Click to collapse
Cool beans, but I have read about 20 threads, specifically what one are you referencing? Link please?
ghost0001 said:
Cool beans, but I have read about 20 threads, specifically what one are you referencing? Link please?
Click to expand...
Click to collapse
It was an answer to this same question asked by you. This thread is redundant.
http://forum.xda-developers.com/galaxy-s4-verizon/help/verizon-to-att-t2801297
k1mu said:
It was an answer to this same question asked by you. This thread is redundant.
http://forum.xda-developers.com/galaxy-s4-verizon/help/verizon-to-att-t2801297
Click to expand...
Click to collapse
That thread just asks if the SIM card would work and if they would need to flash a GSM ROM to their S4. That thread does not answer the questions I asked. I just gave my insight after a visit with the AT&T store. Store techs tend to not know as much as the XDA community. That is why I asked here. So no, it is not a redundant thread. I appreciate your answer, but it isn't what I am looking for. Not a straight up yes or no, this or that.
As for the GSM locks I discussed, it was from an experience I had with a Motorola Droid 2 and using it on a local GSM provider in the USA. So yes, that was pre LTE.
ghost0001 said:
That thread just asks if the SIM card would work and if they would need to flash a GSM ROM to their S4. That thread does not answer the questions I asked. I just gave my insight after a visit with the AT&T store. Store techs tend to not know as much as the XDA community. That is why I asked here. So no, it is not a redundant thread. I appreciate your answer, but it isn't what I am looking for. Not a straight up yes or no, this or that.
As for the GSM locks I discussed, it was from an experience I had with a Motorola Droid 2 and using it on a local GSM provider in the USA. So yes, that was pre LTE.
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My point, which you apparently missed, is that there is no reason for starting up yet another thread to ask questions that have already been answered. That''s why I said that this is redundant.
OK, let me answer your questions.
1. Can this be done?
Yes, you can install an AT&T SIM, set up the APN, and it will work. What bands you get and what bandwidth you get depends on what bands AT&T are using in your area. You won't likely be able to get LTE speed; most likely just Edge. You can't fix that, as it's a limitation of the phone's radio hardware. Again, some people have made claims that you can flash the AT&T GS4 modem on a Verizon phone and change that, but that's pretty risky as it will likely brick your phone.
2. What do I need to do to the phone(s)/tablet to make it work?
It works, for some level of "work". If you're stock,some people have reported that the firmware requires CDMA for some functions, like SMS. I haven't verified that. I was able to send SMS with my phone and a UK SIM which uses the AT&T network.
3. Will I be able to get 4G speeds?
Not likely. For example, see here http://phandroid.com/2012/12/10/nexus-4-att-lte/ - the common band, LTE Band 4, has limited AT&T coverage.
I haven't gone over the specs of the two phones lately to match them up, so that may be worth looking at again.
k1mu said:
My point, which you apparently missed, is that there is no reason for starting up yet another thread to ask questions that have already been answered. That''s why I said that this is redundant.
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Thank you for your answer. I decided to trade the phones into AT&T and get a credit towards a Samsung S4 and a Asus Padphone X. After I read a few more posts over the internet and a few more hours figuring out how LTE works I came across the answer. I did miss what you meant and I apologize. Again, thank you for your answer.

[Q] G900T Mobile Data not working on ATT

My friend purchased a G900T that was broken for parts, which needed a new screen. Upon replacing the screen, the phone was functional, but he discovered that the IMEI number had been blacklisted on T-Mobile's network. We unlocked the phone to use it on ATT, and the device works fine on the ATT network, with the exception of mobile data. No matter what steps we have taken, putting in custom APN settings, we have not been able to get data to function.
Does anybody have any suggestions as to what might be causing these issues?
Thanks a lot in advance! :good:
Have you tried to flash an AT&T ROM & AT&T Modem?
Or are you still running T-Mobile ROM & Modem?
Still running the stock Tmobile rom and modem. I thought about switching to ATT rom and modem, but I wasn't sure if that would brick the phone or if it should just work with the stock Tmobile modem. Can I just flash an ATT rom?
Just make a Nandroid beforehand.
T-Mobile S5 comes w an unlocked boot loader so you shouldn't have any problem. You put in an AT&T SIM card right?
You do not want to flash AT&T firmware on a Tmobile phone unless you are looking to brick it. You can however flash ROM's from Unified S5 threads (900F, 900T etc.) that are open to multiple model phones.
So if I flashed one of the unified roms, would that change the modem at all? I was thinking that it wouldn't be part of the package. Would just flashing an att modem be a terrible idea? I am using an Att sim card. Thanks for the ideas so far!
No, do not flash an att modem or ROM on a tmo device. It won't work, and it is not meant to work.
Does your subscription have an active smartphone data plan?
Are you getting any data connection (E, 3G, or 4G)_and you're not able to jump on the LTE or just no data at all?
If the answers to above questions are yes, there are a few more things att checks for before authenticating data use on a device.
These fields need to look exactly like this:
ro.product.model=SAMSUNG-SM-G900A
ro.product.name=klteuc
ro.product.device=klteatt
ro.build.product=klteatt
This information lives in the build.prop file of your android OS and you're gonna have to look up how to back up and edit this file. Start off here http://forum.xda-developers.com/showthread.php?t=1948558 and keep on reading. I kbow this is exciting and you want to make it work quickly but it is not so simple. So reading and researching are your best friends.
Best of luck,
Sent from my SAMSUNG-SM-G900A using XDA Free mobile app
Okay, thanks for the info! We are just plain not getting any data at all, and the user does have an active data plan with ATT. MMS messages are not even able to be sent or received. So in this instance, do you think modifying the build.prop to match the example you gave me would resolve the issue? I'm pretty comfortable working with the build.prop on the device and just working the the Android OS in general so that should not be a problem.
So I guess checking the APN settings won't be a bad idea:
http://forum.xda-developers.com/showthread.php?t=2975336
[Q] Tips on using a G900T on AT&T
See if the APN matches with this one, and toggle airplane mode on/off each time you change things in APN.
Sent from my SAMSUNG-SM-G900A using XDA Free mobile app
Okay, I had checked APN settings before, but I'm not sure if they were specific to the S5 on ATT or just some generic ATT one I found. That thread looks pretty helpful, I'll see if I can give it a shot later today.
You may also consider loading an international ROM for example http://forum.xda-developers.com/showthread.php?t=2732110
Is an excellent ROM
Sent from my SAMSUNG-SM-G900A using XDA Free mobile app
I know it's a foolish question, but you never know. Are you sure your mobile data is not turned off? My wife did that a while back.
I'm running a AT&T rom on my t-mobile s5 with out any problems as a matter of fact I have better signal.i just flashed rom not modem
Well thank you to everybody for insight into this. The link that Commodore 64 posted pertaining to the APN settings ended up fixing these issues. I had input different ATT APN settings I found in a different thread previously, but I guess they must not have been right. Still running the stock Tmobile rom and we are now able to get data and 4G with really good speeds.
Cheers!
1337free said:
Well thank you to everybody for insight into this. The link that Commodore 64 posted pertaining to the APN settings ended up fixing these issues. I had input different ATT APN settings I found in a different thread previously, but I guess they must not have been right. Still running the stock Tmobile rom and we are now able to get data and 4G with really good speeds.
Cheers!
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May I ask what APN settings you are running? With the APN settings I'm using I get full 4G LTE data just about everywhere I go, besides way out in the stix then I get 4G in some spots.
Sent from my SM-G900T on ATT
Quickvic30 said:
May I ask what APN settings you are running? With the APN settings I'm using I get full 4G LTE data just about everywhere I go, besides way out in the stix then I get 4G in some spots.
Sent from my SM-G900T on ATT
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I'm using the APN settings in this post http://forum.xda-developers.com/showthread.php?t=2975336

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