Keep things simple and bring the phone you love to SIMPLE Mobile and get powerful coverage on a nationwide 5G† network. No matter your phone s SIM card size - nano micro or standard - we ve got you! Our SIM kit has 3 pre-cut sizes in one. All you need to do is detach the right size for your compatible phone and activate your service. You can even keep your existing phone number or get a new one. Confirm your phone is compatible then buy a SIMPLE Mobile SIM to easily activate and switch today. Shop for your next SIMPLE Mobile SIM kit and plan online or at you nearest Walmart store.