US Cellular phone, Cricket/ATT SIM Issues and Questions - AT&T Samsung Galaxy S6

Hi, I'm new here but have been using the site for a long time to root several phones of mine over the years. I have a question. I just bought the Galaxy s6 for US Cellular but I have a Cricket SIM and the phone is factory unlocked so when I got it, I had to set up APN to use and now shows as ATT. Cricket ,ATT same company now, I know. The question is, is there a way I can either put this phone on ATT or Cricket stock rom? I have issues with signal bars and I really want Wifi Calling as a bonus. Tried flashing ATT ROM with Odin and 5 files but no luck. PIT failes to re-partition. Any help? Thank you.

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AT&T unlocked 2014 x not working on tmobile

I have an unlocked AT&T xt1097 but it won't register my T-Mobile Sim card. It registered for about 3 minutes, got a welcome to T-Mobile text and that was that. My phone number shows up in settings, but it shows I have zero service. I've reset, and rebooted several times to no avail. My sim works in a nexus 6 so it's not the sim. Imei os clean. Does anyone have any ideas what it could be or how I could get it to work with my T-Mobile sim?
When you say unlocked, unlocked Sim or unlocked boot loader?
sim unlock. As far as I know there's no boot loader unlock.
Could it be that the imei isn't in T-Mobile's data base since it's an at&t moto x?
Edit: went and put the imei in to tmobiles imei checker and it couldn't figure out what device it was and if it was okay to use on their network. Now I just need to verify with T-Mobile and see if they can register the imei.
Bl00dRunzC0ld said:
I have an unlocked AT&T xt1097 but it won't register my T-Mobile Sim card. It registered for about 3 minutes, got a welcome to T-Mobile text and that was that. My phone number shows up in settings, but it shows I have zero service. I've reset, and rebooted several times to no avail. My sim works in a nexus 6 so it's not the sim. Imei os clean. Does anyone have any ideas what it could be or how I could get it to work with my T-Mobile sim?
Click to expand...
Click to collapse
did you ever get it to work? i am experiencing the same issue. it connects to my friends AT&T network fine but with t-mobile it just says "cant register" etc,etc.
Change the APN settings
I have had a problem like this with my unlocked phone and AT&T, but when they set it up in the AT&T store they fiddled with the APN settings. I had to do the same to get my wife's unlocked Lumia 635 to work on the T-Mobile network. Try the values used in the link attached and see if it works.
http://www.4gtricks.com/2013/04/t-mobile-4g-apn-t-mobile-4g-apn-settings.html
Att motox on tmobile
Reireichan said:
did you ever get it to work? i am experiencing the same issue. it connects to my friends AT&T network fine but with t-mobile it just says "cant register" etc,etc.
Click to expand...
Click to collapse
.
I was able to connect to tmobile network some times, able to make calls. No data connection at all. I played with APN settings and everything else. any help..?
I have an unlocked ATT x1097 and it works just fine with tmobile.
You just have to MAKE A NEW APN SETTING.
When you put a tmobile sim in it, it will automatically create a couple of T-MOBILE apn settings. Just leave that as is and create a NEW APN SETTING with same info you can find from Google. Select that as your data apn. And reboot the device for the best result. It should fixed the problem.
For those of you whose sim does not register into tmobile network; i think it could be one of the following reasons:
1. Original ATT modem does not work well with tmobile frequency in your area
2. The device is locked (stolen, non-payment, etc)
3. The device is broken
4. Your SIM card is damaged
As long as you are at the home screen with tmobile sim, your phone is GSM UNLOCKED, and it iwill never lock again.
keoaloha said:
I have an unlocked ATT x1097 and it works just fine with tmobile.
Click to expand...
Click to collapse
Where did you get it unlocked?
keoaloha said:
I have an unlocked ATT x1097 and it works just fine with tmobile.
You just have to MAKE A NEW APN SETTING.
When you put a tmobile sim in it, it will automatically create a couple of T-MOBILE apn settings. Just leave that as is and create a NEW APN SETTING with same info you can find from Google. Select that as your data apn. And reboot the device for the best result. It should fixed the problem.
For those of you whose sim does not register into tmobile network; i think it could be one of the following reasons:
1. Original ATT modem does not work well with tmobile frequency in your area
2. The device is locked (stolen, non-payment, etc)
3. The device is broken
As long as you are at the home screen with tmobile sim, your phone is GSM UNLOCKED, and it iwill never lock again.
Click to expand...
Click to collapse
Just wanted to say thank you. My T-Mobile SIM wouldn't connect and I even went to the T-Mobile SIM store to get a new SIM Card but it didn't help. As you stated, adding a new APN setting was the only thing that worked.
For those of you who want to unlock your Moto X, I purchased a code on eBay for about $8 and received it within 6 hours. I would post the link but I'm afraid it might be considered spam.
What type of data signal are you getting? LTE?
keoaloha said:
I have an unlocked ATT x1097 and it works just fine with tmobile.
You just have to MAKE A NEW APN SETTING.
When you put a tmobile sim in it, it will automatically create a couple of T-MOBILE apn settings. Just leave that as is and create a NEW APN SETTING with same info you can find from Google. Select that as your data apn. And reboot the device for the best result. It should fixed the problem.
For those of you whose sim does not register into tmobile network; i think it could be one of the following reasons:
1. Original ATT modem does not work well with tmobile frequency in your area
2. The device is locked (stolen, non-payment, etc)
3. The device is broken
4. Your SIM card is damaged
As long as you are at the home screen with tmobile sim, your phone is GSM UNLOCKED, and it iwill never lock again.
Click to expand...
Click to collapse
Yes, LTE and 4G
keoaloha said:
Yes, LTE and 4G
Click to expand...
Click to collapse
Nice. Where did you get your unlock code?
I don't know about OP but I have always used swiftunlocks and have had great luck. Got my N6 from ATT unlocked through them without issues as well.
http://www.swiftunlocks.com/unlock/motorola-at-t-tmobile-worldwide
I noticed that sometimes phone picks up apn without issues and sometimes you have to restart so I just restart every time I make a change to be on the safe side.
Just in case anyone else has the same issue as OP, you should use the
Code:
epc.tmobile.com
APN, NOT the
Code:
fast.tmobile.com
one.
The fast.tmobile.com one would not let me register on the network. epc one did immediately.
Bl00dRunzC0ld said:
I have an unlocked AT&T xt1097 but it won't register my T-Mobile Sim card. It registered for about 3 minutes, got a welcome to T-Mobile text and that was that. My phone number shows up in settings, but it shows I have zero service. I've reset, and rebooted several times to no avail. My sim works in a nexus 6 so it's not the sim. Imei os clean. Does anyone have any ideas what it could be or how I could get it to work with my T-Mobile sim?
Click to expand...
Click to collapse
Hey, I know this post is kind of old but I am currently having the same problem with my moto X 2014 going from At&t to T-Mobile, were you able to get it fixed and if you did, what did you do?
Any luck? I've just come accross the same issue. Got phone unlocked, and bought a new sim and activated. I'll get like 3-4 minutes of service randomly here and there, but about 99% of the time no service. Tried multiple variations of APN settings that I've found online. No luck
Fixed all my seriously annoying connection problems by flashing the 4.4.4 modem.
http://forum.xda-developers.com/showpost.php?p=61208627&postcount=5
I just gotta upload the 4.4.4 modem from my pc, will do that later for you.
edit: https://www.mediafire.com/?4ydw34c4bjxk423
thorasaurus said:
Just in case anyone else has the same issue as OP, you should use the
Code:
epc.tmobile.com
APN, NOT the
Code:
fast.tmobile.com
one.
The fast.tmobile.com one would not let me register on the network. epc one did immediately.
Click to expand...
Click to collapse
Neither one works for data... Just got it unlocked from swiftlocks and I can get voice, but no data :crying:
Someone help!! ...plz
Anyone ?? T-Mobile reps are mostly useless, and keep telling me that my device may have been ' re-locked ' to AT&T after a hard reset !! I know that's not the case because I've thrown in a Vodafone sim and it recognized it ! The sim unlock was purchased from SwiftUnlocks and the phone took it in one try w/o any issues!
Now, I can't even get voice to work... All I see is ' No Service ' and when manually trying to register with T-Mobile, it says ' unable to connect to the T-Mobile network. Please try later '
Someone please help out!!

Issue with At&t unlocked Moto X 2014. on t-mobile

So i am having issue. I bought a Moto X 2014 and it is clean in terms of imei. Both t-mobile says its clean and at&t says its clean. It is a AT&T variant XT1097 and like i said it is clean in terms of imei. weirdly enough T-mobile wont be picked up on the service, but AT&T will? it basically says
No Service
selected network (T-mobile) unavailable
and when i do try to select a network it says
"cant connect to network right try again later"
has anyone else have this issue with the AT&T moto trying to use it on at&t? and found a solution? if there is any solution ill take it i need all the help i can get lol
i tried reseting it, factory reseting, airplane mode, etc literally almost everything else.
Sorry.....I have similar issue..Did you find the solution? If yes could you share the info for it.
sksearch said:
Sorry.....I have similar issue..Did you find the solution? If yes could you share the info for it.
Click to expand...
Click to collapse
Add the T-Mobile APN.
it's discussed on the ATT thread, basically it's an issue with the lollipop radio used on our update, "fix" is here: http://forum.xda-developers.com/moto-x-2014/general/att-xt1097-lollipop-discussion-t2951294/page36
Add the APN (as mentioned above)
Download the 4G/LTE switcher app
select WCDMA preferred as network, only HSDPA speeds but it's better than no service ^_^
I had this similar issue and it was driving me absolutely insane, the connection would be weak then it would just disconnect me altogether and then zero service. Most of the time if I were to get a call the radio would switch to HSPAP like normal then after the call it would fail to switch back to LTE then it would just completely drop connection. This is on an unlocked AT&T XT1097 running on the unlimited MetroPCS (T-Mobile) mind you.
Since February 2015 I've been dealing with this bug by using LTE switch to get by, but this got so tedious and it just irked me that I had to go thru all this crap because of poor development. This is a pretty huge bug that should've never been there to begin with. Seriously, how dare you mess with my service Google?
Anyways what I did to fix this completely was just purchase MoFoRoot for $20 (fully worth BTW) and flash the 4.4.4 AT&T modem and now I have zero issues. I used to not connect to the network on a reboot but since flashing the modem I am now able to connect and stay connected without any hassle. The connection is now solid and I can't be happier with this phone. Currently on stock 5.0.2 non-rooted with 4.4.4 modem and zero problems, now I don't need to get another phone.
Using the fast.metropcs.com APN as the T-Mobile APN doesn't allow me to connect. I have solid LTE and HSPA/HSPAP service with it and can't be happier... I take that back, I'd be happier with better indoor coverage.
Thank you makers of MoFoRoot for your lifesaver app, I am happy to have supported your fine work.

Note 3 will not register onto network

(I posted this in both the T-Mobile Note 3 and AT&T Note 3 forum)
So, every once in a while it will connect to the T-Mobile/MetroPCS (I have MetroPCS but since MetroPCS uses T-Mobile Towers, it (SHOULD) work and has in the past)
On my Samsung Galaxy Core Prime that I bought from the MetroPCS Store, it works absolutely perfectly.
It always is connected to the T-Mobile network.
But this phone, Samsung Galaxy Note 3 (AT&T -- BUT I flashed Alliance Rom for T-Mobile, so it has a T-Mobile ROM) will not connect. As I've said before, if I get it at the right time, which is completely unpredictable and restart my phone it will connect but 10 minutes later it will disconnect and tell me "Selected Network (T-Mobile) is Unavailable"
Before, when I had the stock ROM (Lolipop AT&T) it did the same thing Except when it disconnected it would tell me "Phone not allowed MM#6"
The IMEI is valid and not blocked.
I do have service
I manually set the carrier to T-Mobile and also quick note when I click "Search networks" it only gives me T-Mobile, AT&T and Virizon (But it does only these three on my Core Prime too)
This phone IS UNLOCKED
and my Sim card is also Unlocked
And also, I have tested another Samsung Galaxy Core Prime's Sim card with this phone ( I have this phone, and one of my family members does too and also has MetroPCS )
It did the same thing
THOUGH when I tested with my other family members Cricket SIM card, it worked Perfectly!
Cricket, uses AT&T Towers from what I remember. So this makes me think that the phone, since it is AT&T it will connect to AT&T over everything else no mattter what I do. So,
Do any of you think buying a T-Mobile varient of this phone (Note 3) would fix the problem? Instead of this AT&T varient?
I also tested this with a Blu Studio Energy 2 (It is not carrier specified) and had the same problem. It would work but sometimes it wouldn't and there was no way to guarentee it not disconnecting, and no way to put it back on the network that I knew of it just happened at random
If I put my sim card in my Core Prime, turn it on then turn it off and put it in my Note 3, it will connect for a couple seconds.
ANY HELP -- Would be appreciated.
I fixed this by myself.
I didn't realize this, but you need to call MetroPCS and add your new phone's IMEI.

Change g900a to g900t

My wife got me a unlocked galaxy s5 that was a at&t phone. I have metro pc's as a carrier and I want to be able to use Wi-Fi calling with the phone. Does anyone know a way to change it to t mobile since metro pc's uses the mobiles network. I just sent it to Samsung for repair and told them the truth which is that I got the phone unlocked. Please help. I'm only a savvy user at best.
If the phone has the AT&T marshmallow update, you should be able to use WiFi calling. You will not be able to flash the tmo firmware to the phone, if that is what you are asking. The phone is probably SIM unlocked, the bootloader is not unlocked...which would allow easy flashing.

Restore wi-fi calling - carrier unlocked

Hi. I'm new (and old) so apologies in advance for any faux pas. I couldn't find another thread with a problem like this, so I'm posting a new question.
Here's what happened:
I have been using Ting MVNO SIMs on two Galaxy S8 phones for about 18 months. Preparing for an overseas trip, I asked T-Mo to unlock the phones so I could use foreign SIMs.
T-Mo unlocked the phones, but now I can't get wi-fi calling to work on the Ting SIM. Tried a MintMobile and FreedomPop and the same thing, no option in the tools or phone app to activate wi-fi calling although it is activated at the MVNO and the E911 addresses are correct.
T-Mo says it's impossible that unlocking did that. Well, it happened. Ting doesn't have a clue about how/why it happened or how to fix. Samsung says it's the carrier's problem not theirs.
I factory re-set hoping it would restore the lock, but that didn't do anything. I don't get a signal at my home, so wi-fi calling is necessary. My next step is to buy new phones.
Ideas? Thanks!

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