Padgene Sweet Series 5" Android 5.1 Unlocked Smartphone, 8GB + 512MB, MTK6580 Quad Core, Dual Sim, Dual Camera (5.0MP + 2.0MP), 2G / 3G GSM Smartphone, Pink Android 5.1 Operation System. Phone size: 143.8mm*71.4mm*8.2mm. (L*W*H). Dual Standby, dual SIM card slots, you can install One Standard and One Micro Sim Card. Pls make sure your card is postpaid card. Work with postpaid card. 3G - 850/2100, 2G -850/900/1800/1900. US compatibility Nationwide on all GSM Networks including AT&T, T-Mobile, Cricket, MetroPCS, Straight Talk, Pure Talk USA and others. Will not work with CDMA Carriers like Sprint, Verizon, Boost or Virgin. Multi-function. G-sensor, Bluetooth, GPS, Wifi, Personal Hotspot, MP3 player, Mp4 player, Gallery, Sound Recorder, Videos, FM Radio, Torch, Google Search, Gmail, Play store etc. Dual camera. Back camera is 5.0MP with flash light; Front camera is 2.0MP. Please search "Padgene" for more choice.