Easyfone prime series cell phone is designed for the elderly, it all has a big button, Big font, big volume, user-friendly operating system, and good App service to lead seniors to full and rich lives. An unlocked phone is a device that is not bound to any carrier or plan - i.e. no carrier that uses AT&T network (select prepaid sim card), no CDMA Carriers (Verizon, Sprint, Boost, PagePlus) an ice manual can store user health information and emergency contact n the easyfone prime a1 is an unlocked 3G senior flip phone. It works perfectly with any GSM and WCDMA(850/1900) network cellphone providers globally, such as AT&T, O2, Rogers, EE, Vodafone, etc. With built-in FM radio, you can enjoy local FM stations even when you are on the move. The phone has enhanced volume and an enhanced keyboard. It has a large programmable SOS panic button that can call for help in case of an emergency. With Built-In FM this model Isn't compatible with any CDMA Network operators such as Verizon, Sprint, and Virgin. [ Note 2] - Please select Prepaid or Preload sim card as the phone sim, This package doesn't include a sim card.