GSM Unlocked cell phone is compatible with carriers like AT&T, T-Mobile, H20, Simple Mobile, Consumer Cellular, Metro PCS, Cricket, GSM, Tracfone GSM, Ting GSM, Project Fi GSM and other prepaid carriers. The unlocked cell phone will NOT work with CDMA Carriers like Verizon, Sprint, Boost Mobile, Virgin mobile, CDMA, Tracfone CDMA, Total Wireless, Ting Wireless CDMA, Project Fi CDMA or U.S Cellular. CDMA carrier requires you to purchase their carrier branded phones only. Even if the listing says Unlocked it will not work with CDMA Carriers. - SD, up to 64 GBSIGNALS2G/GSM/CDMA : 850 / 900 / 1800 / 1900 - GSM3G/GSM /CDMA : 850 / 900 / 1900 / 2100 - HSDPA 4G/LTE : Band 1(2100), 2(1900), 3(1800), 4(1700/2100), 5(850), 7(2600), 17(700), 20(800), 29(700) - LTE Network Status : AT&T Unlocked - Release Date : 2015, November - BUILDMeasurements : 166.8 x 86.4 x 13.9 mm (6.57 x 3.40 x 0.55 in) Weight : 307 g (10.83 oz)Safety : IP68 dust/water proof (up to 1.5m for 30 mins)DISPLAYSize : 5.7 inches, 89.6 cm2 (~62.1% screen-to-body ratio) Resolution : 720 x 1280 pixels, 16:9 ratio Technology : IPS LCD capacitive touchscreen Display color : 16M colors Protection : Yes - Pixel Density : 258 ppi density - CAMERARear Camera : 8 MP Focus Type : AFRear Camera Flash : LED flash Features : HDR, panorama - Video Technology : 1080p@30fps Front Camera : 2 MP CONNECTIVITYWi-Fi Signals : 802.11 a/b/g/n/ac//r/k, dual-band, Wi - Fi Direct, hotspot Bluetooth : 4.1, A2DP, EDR, LE USB Type : micro - USB 2.0 GPS : Yes, with A-GPS NFC : Yes Radio/FM : No - Sensors : Accelerometer, gyro, proximity, compass, barometer Audio Jack : 3.5mm jack, Active noise cancellation with dedicated mic - BATTERYType : Removable Li-Ion - Capacity : 3700 m - Ah battery Talk-Time Hours : Up to 23 h (3G)Stand-by Hours : Up to 816 h (3G) Color: Black.