Detailed Product Description i9B 3G dual sim dual stanby mobile phone ,quad band cell phone- Operating Frequency: ... 850 / 900 / 1800/1900 MHz Provider & SIM card - Work for any SIM Card & any Tele Company, SIM Card Unlocked Cellular enhancement protocol - GSM ... , Picture Display, Video Display, Ring Tone, Caller Group - Security Setup: SIM Lock, Phone Lock, Keypad Lock, Black List, Filter List - Ring ...