bbfone Senior Citizen Mobile Phone B100 (W105) Big Button Candy Bar T-Mobile 2G Mobile Cell Phone with Dock - Black Big Keypad for easy dialing, Big Font for easy viewing and Big Volume for easy hearing. Docking charger included for easy charging Big Buttons Loud Volume and an SOS button for emergencies FM, Torch Function, Talking key Unlocked cell phones are compatible with GSM carriers like a T-Mobile (but only on 2G) as well as with GSM SIM cards (e.g. H20, Straight Talk, and select prepaid carriers). Unlocked cell phones will not work with CDMA Carriers like Sprint, Verizon, Boost or Virgin. Also note sim is not included with the phone.