Hello Egbe. There is a solution for blacklisted T-Mobile USA iPhones, but we need to make a more deep check on the Blacklist status of that device in order to be 100% sure for the solution. I suggest using our IMEI Unlock Check first and then one of our agents will inform you which service is ideal for your device. If you are 100% sure of your iPhone's status and you do not want a check from us, you can go to the following link and order a T-Mobile USA IMEI Unlock service for your iPhone: https://www.iphoneunlock.zone/iphone-unlocking-solutions/ - I suspect that first we will have to clean your device, so you might need this service -> https://www.iphoneunlock.zone/unbar-unblacklist-iphone-service/ - I highly suggest to first make an iPhone IMEI Unlock Check (https://www.iphoneunlock.zone/) and then we will inform you which service is ideal for your device.