Mango Natural Unlocked Quadband Dual sim with Android 4.0 3G Smart Phone 3.5 Inch Capacitive Touch Screen - AT&T, T-mobile, H20, Simple Mobile and Other GSM Networks (White) Dual sim cards dual standby Type: Smart Phone OS: Android 4.0 CPU: Media Tek MTK6575 1GHz Frequency: 2G: 850/900/1800/1900MHZ 3G: 2100MHZ