AT&T locked S20 to T-Mobile.

[Gojo2020]

Hey guys, new here and was looking for a quick info. Last time I've owned a Samsung phone was the S7 and I remember being able to flash the AT&T version to the unlocked version using some software that I believe was originally for developers only.

Anyone know if that is still possible today with the S20? I also plan to purchase an unlocked code so I can use the AT&T version to T-Mobile. Will there be any missing bandwidth or 5g issues using that phone on the T-Mobile network?

 

[mustang7757]

Hi, welcome to AC!
Once you unlock the device , Tmobile sim should work without a issue and should reconfigure to Tmobile. You can can still flash but its unnecessary unless a issue arises.

 

[Gojo2020]

Will T-Mobile configure a sim unlocked AT&T version with WiFi calling? Do you know what software is being used now to flash the phone to the unlocked version?

 

[mustang7757]

Will T-Mobile configure a sim unlocked AT&T version with WiFi calling? Do you know what software is being used now to flash the phone to the unlocked version?

Yes it should , Odin is used for flashing , you can flash to unlocked version also if you wish after you sim unlock your phone.

 

[cnotes2019]

Yes it should , Odin is used for flashing , you can flash to unlocked version also if you wish after you sim unlock your phone.

So when I purchase the Fold 2 and iPhone 12 on Verizon and wait 60 days to unlock them I should get all the 5g bands of T-Mobile and AT&T? Thanks

 

[mustang7757]

Re: AT&T locked S20 to T-Mobile.

So when I purchase the Fold 2 and iPhone 12 on Verizon and wait 60 days to unlock them I should get all the 5g bands of T-Mobile and AT&T? Thanks

If the fold is similar to phones yes then , iPhone will work on on tmobile or att

 

[cnotes2019]

Re: AT&T locked S20 to T-Mobile.

If the fold is similar to phones yes then , iPhone will work on all carriers

iPhones will work on all carriers regardless of if it was purchased on installments on T-Mobile and AT&T?

 

[mustang7757]

Re: AT&T locked S20 to T-Mobile.

iPhones will work on all carriers regardless of if it was purchased on installments on T-Mobile and AT&T?

I know the Att and tmobile will work when unlocked, not sure Verizon or sprint , think they have different model for them if I remember correctly


Can verify that at https://www.imore.com/new-homepage