When I left country for Mexico, I called T-Mobile to ask how to use my phone while in Mexico. I was told I had to restore/unlock my phone, and they sent me the protocol. However, it did not work, and the T-M tech told me I had to contact Apple. The tech at Apple told me how to restore, which I was able to do once I arrived in Mexico.
The Telcel provider got me back to a home screen, and installed a Simm Card, but I have no service.
Is my problem with the restore problem, with T-Mobile, or something else. Can someone help me navigate this process? If you need more info, I will try to provide it.