Trying to gain access to wifi calling etc on AT&T. Can I flash the ATT CSC to my unlocked 930F?
If yes, how?
Thanks.
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I recently purchased a Galaxy S4 i9505 on EE from Carphone Warehouse, and flashed the 5.0.1 BTU firmware. After I did that I then read I'd need to be carrier unlocked, but I tried calling and receiving calls and messages and using 4g and it worked fine. I also saw some posts about flashing modems. Anyway I'm really confused about what I need to do; should I try and unlock or not. Thanks everyone for your help.
The BTU firmware has no carrier branding, which means it has no carrier logos or bloatware included in it. Other than the lack of carrier doodads, it's the same firmware. You shouldn't need to flash a modem as you already have the latest, from when you installed the BTU ROM. However, the S4 would need to be unlocked for use on any carrier if your SIM isn't an EE SIM. But, you either have an EE SIM, in which case you don't need to worry about it, or the S4 was unlocked by the store that sold it, in which case you don't need to worry about it.
TL;DR: Don't touch the ROM. Don't worry too much about the SIM because you can make calls and use data. You don't need to flash a modem.
How do I get a Verizon S7 Edge to recognize a new GSM SIM? I want to use it on another carrier, and Verizon says it's not SIM-locked/carrier locked but when I put in the new SIM, it's not working.
Factory reset didn't work. Would an Odin flash work? IF not, what would?
Thanks. Not sure if I'm asking in the right place.
Flash the U firmware.
Using odin ^^
Depending on which carrier you are flashing to. You can flash the carrier specific file for whichever carrier you want, for example if you want to use it with T-Mobile you can download the T-Mobile Odin and PIT files to flash and it should work fine. Same with AT&T.
Or do as said above and flash the 935U firmware and it'll work fine. Though with this option there's no carrier extras like VOLTE, or wifi calling as far as I know.
I used another Sim on Verizon firmware. Look somewhere in connection settings. There was smthn about which network you want to use Verizon CDMA or GSM. Now i'm on U firmware.
A t-mobile SIM worked fine for me after entering the new APN settings. For best performance though, flash the U firmware to unlock the bands.
I have a stock fresh 930U (factory unlocked US variant), and I want to root it. However, if I do I need to use the AT&T firmware (from what I can tell). Is it possible to get the 930U rooted but still use T-Mobile's wifi calling/VoLTE?
Thanks for any help, I've read everything but can't figure out if this is do-able yet.
What are you asking? If you can flash att firmware on a U and still use T-Mobile wifi calling?
If so, why? T-Mobile is the only carrier that the U firmware supports wifi calling for
I have a new S8 (u1, XAA), unbranded unlocked, using ATT sim card etc. Is there any way to get the ATT features like wifi calling etc by flashing the ATT CSC or do I need to install a full ATT firmware?
f10a said:
I have a new S8 (u1, XAA), unbranded unlocked, using ATT sim card etc. Is there any way to get the ATT features like wifi calling etc by flashing the ATT CSC or do I need to install a full ATT firmware?
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You need more then that. U need to provide att with an imei number from an att phone that has wifi calling available. And from what I hear it can't be iOS, must be android.
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I unfortunately locked my unlocked S8+ international version while trying to flash the CSC for T-Mobile and now I can't use my sim card and I have no idea exactly where this phone originated from... am I screwed?