I purchased a factory unlocked phone Samsung Note 8 from Samsung in 2019 and i started using my T-Mobile service at that time on this phone.
I switched to AT&T and got a new phone from them at that time a Note 10 and stopped using Note 8.
Recenlty my screen broke and i wanted to use my unlocked note 8 as a replacement till i get my note 10 screen fixed. When i put AT&T sim in the phone it is telling me that the phone is locked to the Network for Tmobile even though the phone was never purchased from them.
Can you please let me know how to unlock my phone so i can start using it. right now i am phoneless and that is not good.