Possible to flash AT&T to a T-Mobile or Metro PCS rom? - AT&T Samsung Galaxy S 5

Hey all, I was wondering if I could use the Metro PCS or T-Mobile roms on my recently updated (and unlocked) AT&T Galaxy S5 on the 6.0.1 update with baseband G900AUCU4DPH2?
If so, what steps (link) should I take to do this? Also, would it be possible if I had to use the T-Mobile rom, can I make wifi calling and video calling? I'm using a Metro PCS sim, and I had a T-Mobile GS4 before and everything worked fine on it, I just can't make Wifi calls with AT&T because they crippled their phone.
Thanks!

Related

AT&T S5 on tmobile compatibility

Just a quick question,
I received a galaxy s5 for work today and it is the att version, if I unlock it and use it on tmobile, does it support the same bands as the regular tmobile branded one?? Like LTE and hspa+ 21.
Thanks for all your help ahead of time and tend apologize if this has been posted before, I tried looking for something similar but was not able to find anything.
I have a AT&T Galaxy S5 unlocked. I put my friend's T-Mobile sim card in it and everything worked even LTE without changing anything (APN), it changed automatically. My brother has Claro (by the way I'm in Puerto Rico), with that one I had to change apn's manually to get data working.
I'm freed my AT&T S5 for use on T-Mobile last month and it works just fine. Didn't have to modify any APN settings either as the phone was able to pull it off the T-Mobile SIM.
In all freq's? AWS as well?
SAMSUNG-SM-G900A, with 128gb SD & Rooted.
That's what I'm wondering. I know LTE will work fine. But what about AWS and hspa.

Need Help How to make 3g video call without using at&t Sim card?

I have a Samsung Galaxy S6 Edge 925A, It's a carrier Phone from at&t. Now I'm Staying outside of USA, So how can I make 3G video call without using at&t Sim. In my phone it only have at&t Video call. Any expert here? Version 6.0.1 Mashmellow.........Plz help me

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.

Can't make phone calls on this new network

Hi.
For those who don't know, Freedom Mobile (formerly Wind) is a T-Mobile equivalent network here in Canada, but until recently they launch a new LTE network and their site says I can use my N900A. I used their phone compatibility checker to confirm (see attachment)
However, I bought their sim to test, I get LTE data and works fast, but I can't make phone calls. It just sits there doing nothing and finally hangs. I checked the simcard on another phone and it works, so it's not the sim.
I'm using the lollipop OC1 firmware stock only. What could be the issue here? I appreciate any input.
EDIT:
My phone is unlocked (RegionLockAway) a while ago.
My *#2263# is set to Automatic.
Do calls work on the Bell, Telus, or Rogers network?

T-Mobile to Verizon Wifi Calling

Hello all,
I have a T-Mobile variant of the S10. I desperately need wifi calling and the option is not there since I switched to Verizon (same T-Mobile variant S10). I'm assuming this is a software limitation and I need the Verizon bloatware. Anybody know if flashing Verizon will work? I'm assuming I just use Odin and the stock rom. Been awhile since I've messed with all this stuff. Is there a good tutorial to look at? Thanks for any help!
Flashing the Verizon firmware will probably do it, if it has wifi calling. I know the AT&T firmware has wifi calling because I am on it. You have to have a snapdragon though, flashing to an exynos variant won't work.

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