I bought the iPhone 8 plus at T-Mobile 6 years ago, and I paid for it in full 4 years ago, right now I buy a new one and the old one, the 8 plus has to be unlocked to use it in another country. 3 years ago I go to Best Buy to replace the battery and the phone was damaged in the process, Best Buy order a new one of the same model from Apple and I continue using it with the same SIM card (T-Mobile) until September/2023.
After several calls to T-Mobile and waiting for the unlock, the conclusion is that the carrier (t-mobile) has locked the phone, but t-mobile did not sell it because it was a replacement. and I can't find a way to unlock it.
Carrier: T-Mobile 54.1.1
Carrier lock: SIM locked
IMEI: 358629094743881
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