Sony Xperia M4 Aqua 16GB GSM/LTE Unlocked Cell Phone - Black (U.S. Warranty) SIM unlocked means no contracts or commitment to a specific carrier. Compatible with GSM Networks including AT&T, T-Mobile and cellular network providers utilizing GSM network such as: Straight Talk, MetroPCS, Simple Mobile, Brightspot, Net10, h20 Wireless, and Cricket Wireless This device is not compatible with CDMA Networks such as: Verizon, Sprint, and US Cellular. Fits devices 15.2 x 1.2 x 10.5 in Works with nano sim. Waterproof design: Dont let the mud, or a spill, or the wet weather slow you down Two excellent point-and-shoot cameras: Perfect photos for whenever or whatever you're shooting Up to two days of battery life: Stay out longer doing what you love without having to recharge Octa-core processor: Superior performance, easy multitasking, and faster downloads