No Service on T-Mobile Galaxy S4 - T-Mobile Samsung Galaxy S 4

I have an unlocked T-Mobile Samsung Galaxy S4 (SGH-M919) running Cyanogenmod 13 on the latest nightly. So far, I have been getting no service on the T-Mobile network, even after flashing stock TouchWiz. When I inserted a non T-Mobile SIM card, the phone jumped straight on to the AT&T network. I have tried every method found online but to no avail. Please help. I don't even know how a phone tailored for a single carrier can't even go on its network.

Is the phone running the latest bootloader and modem?

Related

Can't update AT&t NOTE 2 while using tmobile sim card?

MY sister has an att galaxy note 2. She've since left att and switched to tmobile. She also got att to unlock the phone before she left so she could use her tmobile sim card.
Now i'm trying to update her note 2 from 4.1.2 to 4.3 or 4.4 and it says there are no servers or updates avaiable. So you can't update an att note 2 while on tmobile network?
Also if i'm somehow able to do it, would updating her phone lock her phone again and prevent her from using her tmobile sim card?
Would flashing any roms also lock the phone and prevent using tmobile sim?
jinjin12 said:
MY sister has an att galaxy note 2. She've since left att and switched to tmobile. She also got att to unlock the phone before she left so she could use her tmobile sim card.
Now i'm trying to update her note 2 from 4.1.2 to 4.3 or 4.4 and it says there are no servers or updates avaiable. So you can't update an att note 2 while on tmobile network?
Also if i'm somehow able to do it, would updating her phone lock her phone again and prevent her from using her tmobile sim card?
Would flashing any roms also lock the phone and prevent using tmobile sim?
Click to expand...
Click to collapse
I started to ask a bunch of questions.... Let's save time and just try this.
http://forum.xda-developers.com/showthread.php?t=2568537

[Tmobile Customer] What roms should I install on my ATT Note 3 -- ATT roms or Tmo rom

I am with Tmobile. I bought an unlocked ATT Not 3 (mj5). Rooted and installed SafeStrap.
Do I install roms from the ATT section or Tmobile Section? If I install from ATT, should I need to do anything to ensure full capability with Tmobile -- specifically, full range of my unlimited data?
I am looking for a clean rom without all the ATT/Samsung bloatware.
THanks.
You should technically be able to install either as long as you don't flash a T-Mobile modem. I have had an AT&T Note 2 and still have an AT&T S4 (currently using a T-Mobile Note 3 though) all on T-Mobile. I haven't tried this on an AT&T Note 3, but on my AT&T Note 2 and S4, I was able to flash T-Mobile ROMs to gain Wifi Calling (calls, texts, and MMS work over Wifi, even overseas), which is fantastic because I have like no T-Mobile service in my house, but it's perfect when I walk outside. Additionally, you gain the "Network Mode" menu which AT&T removes from all of its devices.
Currently, I'm running Vision X N3 on my Note 3. Worst case, you get bootloops or freezing if it doesn't work on your AT&T model, but that's it. Just don't flash any T-Mobile bootloaders or modems (99% of ROMs for any version of the phone include neither).

[Q] I unlocked and rooted/flashed and now shows wrong network.

Hi guys,
I had my Note 2 on Koodo network for less than a year. Recently I unlocked it and sold it to a friend. My friend is on Videotron network and the phone shows the signal with an R like if my friend was roaming however it works properly. I also tried switching the network manually but it doesn't want to connect to Videotron. Is there something that I need to flash such as modem maybe ? It's running on Slimkat latest stable version.

Putting Verizon SM-G920V firmware on an unlocked Sprint Galaxy S6 (with SM-G920P)

I have a Sprint Galaxy S6 (SM-G920P) which has been unlocked domestically and internationally. I currently use Total Wireless (a Verizon MVNO) and my Verizon SIM card works fine in the unlocked Sprint Galaxy S6, though it displays the ROAMING symbol all the time when it is on the Verizon SIM.
I'd like to flash the SM-G920V firmware (Verizon) on to the S6 phone so that it will be Verizon native. Will this work?
I have done the same thing using ODIN on a Galaxy S7 and it worked flawlessly. I have read that all Galaxy S7s are all the same, just each has firmware than unlocks different radios. Is that also true for the S6?
Thanks in advance!
great quetion i also have sprint s6 and i live in europe and i also wanteed to flash stock g920f firmware but i am afraid of bricking it so idk,
t
Andreja01 said:
great quetion i also have sprint s6 and i live in europe and i also wanteed to flash stock g920f firmware but i am afraid of bricking it so idk,
Click to expand...
Click to collapse
i don't think odin will be able to flash in the first place,i tried to flash both both verizon s6 and g920f on my sprint unlocked phone which won't pick sinal after i manually upgrade to android 7. it fails at flashing system.img .while download write secure download fail (system image)
digitaltinker said:
I have a Sprint Galaxy S6 (SM-G920P) which has been unlocked domestically and internationally. I currently use Total Wireless (a Verizon MVNO) and my Verizon SIM card works fine in the unlocked Sprint Galaxy S6, though it displays the ROAMING symbol all the time when it is on the Verizon SIM.
I'd like to flash the SM-G920V firmware (Verizon) on to the S6 phone so that it will be Verizon native. Will this work?
I have done the same thing using ODIN on a Galaxy S7 and it worked flawlessly. I have read that all Galaxy S7s are all the same, just each has firmware than unlocks different radios. Is that also true for the S6?
Thanks in advance!
Click to expand...
Click to collapse
If your device has been UICC unlocked then all the radios should work. The Sprint S6 is a "Global" device. I am running mine with a GSM sim card without issue. Flashing anything to a sprint device that isn't made for sprint usually will brick your device if it flashes.If you do some research you will find how to remove that annoying roaming indicator. I know I've seen something about this in the HTC One section before. By the way are you getting LTE with your verizon card installed?

Verizon SIM card not working on Note 3 SM-N900T

I recently switched from T-mobile to Verizon , tried to use Verizon SIM card on Note sm-n900t, but Verizon network is not recognized on phone.
the phone is T-mobile unlocked , is this because the base-band firmware on the phone still T-mobile specific? How to fix this?
thanks

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