Oneplus 7t T-MOBILE. how to unlock SIM?

[javier2895]

how to unlock SIM of OP7T T-MOBILE version?

 

[rosboy]

Contact T-Mobile. As far as I know, device needs to be paid off and 7 days on the network. I will suggest you DM them on Twitter. I spent 3 hours on the phone and they said they couldn't help me. Twitter DM got it unlocked immediately.