I have the opportunity to pick up an AT&T unlocked S20FE, and was wondering if it is fully compatible with T-Mobile specifically for 5G/LTE Band 71?
BladeRunner said:
I have the opportunity to pick up an AT&T unlocked S20FE, and was wondering if it is fully compatible with T-Mobile specifically for 5G/LTE Band 71?
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The answer is, but you must flash the unlocked U1 firmware first and that will work or you can flash the T-Mobile firmware after.
You can stay on the unlocked firmware or flash the T-Mobile afterwards, no real difference. The only thing the AT&T version (flashed or not) won't give you is unlimited roaming on US Cellular. You need an actual T-Mobile branded phone for that.
Related
Hey,
I just recently moved to the USA and I am trying to set up my Note 3 to work with AT&T but I'm not sure how to do that.
The phone I currently have is a Rogers Galaxy Note 3 N900W8 (Already knox 0x1), and I'm curious what I need to do to make it work with my AT&T sim card.
I was hoping to stick to ViSiOn-X but from what I can see that is not available for AT&T, so I'll probably just stick with the stock ROM, whichever that is.
Though, I do still have a phone plan in Canada and would like to switch between the sim cards so that I can check my voicemail if at all possible.
Is it possible to set up my phone to work with both Rogers Canada and AT&T USA? Or am I required to purchase a factory unlocked phone to do that?
If it is possible, how?
BlameHoffmann said:
Hey,
I just recently moved to the USA and I am trying to set up my Note 3 to work with AT&T but I'm not sure how to do that.
The phone I currently have is a Rogers Galaxy Note 3 N900W8 (Already knox 0x1), and I'm curious what I need to do to make it work with my AT&T sim card.
I was hoping to stick to ViSiOn-X but from what I can see that is not available for AT&T, so I'll probably just stick with the stock ROM, whichever that is.
Though, I do still have a phone plan in Canada and would like to switch between the sim cards so that I can check my voicemail if at all possible.
Is it possible to set up my phone to work with both Rogers Canada and AT&T USA? Or am I required to purchase a factory unlocked phone to do that?
If it is possible, how?
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Click to collapse
You need a factory unlock so you can switch carriers now as for the rom I'm not sure if the rom will work on AT&T, you should check the rom forum an see if other AT&T users used it an if don't already know the Model for AT&T is SM-N900A, also you could always try the rom once you get an sim unlock, an try it with that rom but if it don't work flash a rom that you kno will work
nemopsp said:
You need a factory unlock so you can switch carriers now as for the rom I'm not sure if the rom will work on AT&T, you should check the rom forum an see if other AT&T users used it an if don't already know the Model for AT&T is SM-N900A, also you could always try the rom once you get an sim unlock, an try it with that rom but if it don't work flash a rom that you kno will work
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Click to collapse
Ive got my phone unlocked now, but I think there may be some issues with the ROM. When I first unlocked it I was getting the 4G connection to AT&T. Now I just have the regular phone connection, no 4G. Data is on.
I was on AT&T network then i unlocked my phone to use on T-mobile. I want to flash my phone to latest android 6 my question is will i have to unlock it again after i flash to latest firmware? Thank you
Nevermind i figured it out.
I have a note 8 on AT&t prepaid. The bootloader is locked. I would like to upgrade to the 9. Is there a variant that works on AT&t prepaid that will allow me to root? Unlocked phone are just carrier unlocked right? Will the unlocked Sammy still let me root?
Thanks in advance.
https://forum.xda-developers.com/galaxy-note-9/help/wanna-chance-to-make-root-custom-t3868562
revned911 said:
I have a note 8 on AT&t prepaid. The bootloader is locked. I would like to upgrade to the 9. Is there a variant that works on AT&t prepaid that will allow me to root? Unlocked phone are just carrier unlocked right? Will the unlocked Sammy still let me root?
Thanks in advance.
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Click to collapse
I don't use AT&T, but yes unlocked phones just mean sim unlocked. Not the same as bootloader unlocked.
U.S. models are bootloader locked so no root there. Exynos models and N9600 are bootloader unlocked. You would need to check the available bands on those models to ensure they match your carrier, or wait until someone on AT&T confirms
Do I need to flash back to U1 unlocked firmware? When the buyer puts their Sim card in, will my current carrier (Cricket) splash screen remain or will it recognize their carrier and change?
If it is unlocked, the buyer can use with any carrier except cdma like verizon or sprint
ryan770 said:
Do I need to flash back to U1 unlocked firmware? When the buyer puts their Sim card in, will my current carrier (Cricket) splash screen remain or will it recognize their carrier and change?
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Click to collapse
Change back or don't advertise as unlocked firmware
Sent from my SM-G973U1 using Tapatalk
Is changing back that hard?
ryan770 said:
Do I need to flash back to U1 unlocked firmware? When the buyer puts their Sim card in, will my current carrier (Cricket) splash screen remain or will it recognize their carrier and change?
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Click to collapse
Just flash back to U1, it is more desirable.
Actually I didn't even know why did you flash it for Cricket... An unlocked firmware works the same with them.
SoNic67 said:
Just flash back to U1, it is more desirable.
Actually I didn't even know why did you flash it for Cricket... An unlocked firmware works the same with them.
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Click to collapse
Because it allowed me to have wifi calling with some trickery. I have basically no service in my house.
WiFi calling is not supported by Cricket... officially.
If you didn't have signal, why kept the service? Total Wireless for example uses Verizon, their reach usually is greater.
Anyway, resale value is greater with original U1 firmware.
To do what you are hoping for.... Download The newest G973U USC firmware and flash that if you're selling it in the USA.... That way it switches apps and carrier bloat when a sim is changed... Otherwise flash G973U1
XAA firmware if your selling anywhere else.
If it was a g973u1, it might not work on verizon/sprint.... If it was a g973u, it should work on both no problem. Even an AT&T S10 can be activated on Sprint or Verizon as long as the IMEI is clean and clear.
So I just got my sprint V40, Model Number LM-V405UA
android version : 9
Android Security Patch: March 1st 2020
And the software version is : V405U20d
Are these all up to date on my model?
______________________________________________
2nd question
What exactly is the benefit of cross flashing the phone with US unlocked KDZ or ATT Unlocked or any other KDZ?
What do you gain from doing it?
is there anything else I can do with my phone to improve it?
1) Yes.
2) & 3) More bands available to you/better compatibility for when you decide to leave Sprint for another carrier (make sure the phone is SIM unlocked first!), plus the ability to connect to more towers if you travel to other countries. Less Sprint bloatware.
4) Unlock bootloader and root device. Take full control of the tech you own!
[NG]Owner
NGOwner said:
1) Yes.
2) & 3) More bands available to you/better compatibility for when you decide to leave Sprint for another carrier (make sure the phone is SIM unlocked first!), plus the ability to connect to more towers if you travel to other countries. Less Sprint bloatware.
4) Unlock bootloader and root device. Take full control of the tech you own!
[NG]Owner
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Click to collapse
I dont actually have sprint, I have Tracfone as my carrier and use the AT&T sim card
which KDZ would be best to use? I looked at LG Firmware and saw US Cellular but there's also the US unlocked one too
The only information i've seen about rooting and unlocking the bootloader is to contact someone that has a octoplus box
aceofpilots said:
I dont actually have sprint, I have Tracfone as my carrier and use the AT&T sim card
which KDZ would be best to use? I looked at LG Firmware and saw US Cellular but there's also the US unlocked one too
The only information i've seen about rooting and unlocking the bootloader is to contact someone that has a octoplus box
Click to expand...
Click to collapse
If you crossflash use the US unlocked.
Look here for unlocking the bootloader.
Once you've done that, rooting is as simple as using TWRP to load Magisk.
[NG]Owner
Get the US unlocked KDZ. I also had the Sprint model. Crossflashing to the US unlocked allowed me to use wifi calling and the additional bands for T-mobile.
smokinu said:
Get the US unlocked KDZ. I also had the Sprint model. Crossflashing to the US unlocked allowed me to use wifi calling and the additional bands for T-mobile.
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Click to collapse
i want t buy one for 150 but its sprint . but i have metro . can i just cross flash and then go to tobile n connect it or it has to be sim unlocked also