BLU Life Play Unlocked Dual Sim Phone with Quad-Core 1.2GHz Processor, Android 4.2 JB, 4.7-inch IPS HD Display,(Grey) Unlocked Dual SIM, 4GB storage; Android OS, v4.2 (Jelly Bean), Micro SD up to 32GB; 3G Band 850/1900 4.7" IPS Display: HD (1280x720) 8MP Camera with LED Flash with HD recording (1080p), 2MP Front Camera for Video Calling and instant self portraits. 7.9mm Slim Body Design.BLU Next Lens Technology: "One Glass Solution" Internet speed of the device is4Gdue to the fact that the phones internet speed is up to 42Mbps. Unlocked cell phones are compatible with GSM carriers like AT&T and T-Mobile as well as with GSM SIM cards (e.g. H20, Straight Talk, and select prepaid carriers). Unlocked cell phones will not work with CDMA Carriers like Sprint, Verizon, Boost or Virgin.