SIM card question

[caleo69]

Leaving att. They approved unlocking my phone. Do I need to back up and then erase everything on phone to join visible? Or just put in new SIM card?

[Derrick2654]

I just left Att. Too! After  you just need to install the new Visible SIM card turn off phone then turn back on, and log into visible app and follow the activation instructions.  Everything remained on my  iPhone. Nothing was lost.