T-Mobile Prepaid Complete SIM Starter Kit Buying an unlocked, compatible phone or tablet? This Complete SIM Kit allows you to choose a plan and connect to T-Mobiles Nationwide 4G LTE network. Punch out the ready-to-use Nano SIM, slip it into your phone or tablet, and youre ready to go. Use any T-Mobile or compatible GSM unlocked phone or tablet With T-Mobile: No annual contracts, overages or credit checks Complete SIM Kit allows you to choose a plan and connect to T-Mobile's Nationwide 4G LTE network Punch out the ready-to-use Nano SIM and the kit includes a Nano SIM card with Micro and Standard SIM adapters Use any T-Mobile or comptible GSM unlocked phone or tablet With T-Mobile: No annual contracts, overages or credit checks