Cell phones from nearly every manufacturer will work on our network as long as they are GSM compatible and use a SIM card! If you already have a compatible phone, all you need to do is purchase a Ultra Mobile SIM kit.
If your phone meets the following two criteria, your phone will work with Ultra Mobile:
Ultra Mobile has traditional, Micro and Nano SIM cards. Micro and Nano SIM cards are smaller than traditional SIM cards and are typically found in newer phones such as the Samsung Note II, Samsung Note III, Samsung Galaxy S III, and various iPhone models. The Micro SIM is part of Ultra Mobile’s standard SIM kit.
If you begin your Ultra Mobile registration and your phone says, “Restricted” or “Contact Service Provider,” doesn’t allow you to make calls, or won’t grant access your phone book, the phone is most likely locked. Contact your previous carrier to unlock your phone.
Unfortunately, BlackBerry phones and older Sidekick phones will not work or may have limited functionality with Ultra Mobile service. Ultra Mobile cannot guarantee all of a phone’s functions – such as picture messaging, web usage, and other phone-specific applications – will be compatible with Ultra Mobile’s service.