I have bought an iPhone 7 Plus at Best Buy in full price (unactivated) to use it with a Brazilian carrier. It seems I need first to activate it with an US carrier to use with other carriers. I got a Nano Sim Card from T-Mobile and I would like to know if I activate my phone with this Sim Card, it will be locked by T-Mobile
Best answer by gramps28
The phone needs to be activated on Tmobile's USA network and meet the usage requirements.
Two months on postpaid or a year or $100 in refills for prepaid.