iPhone 12 Pro Max trade in deal valid with T-mobile phone??
Mom had old iPhone 7 128 black that shows value of $350 when plugged into the tool on myAtt app. The IMEI is still locked by t-mobile. My mom still has T-Mobile so they don’t want to unlock.
I am not adding a line, I plan to use the trade in value to upgrade current device.
is the trade in deal valid in my situation?