Compatibility: All GSM Networks including AT&T and T-Mobile, Optimized to work with 3G (UMTS/HSPA+) networks when operating inside the US. 3G coverage may be limited when roaming outside the US., 4.5 inch 720p HD TFT display, Quad-core 1.2GHz processor with 450MHz graphics processor, 5MP rear camera, plus front facing camera. Motorola Moto G details and information - Amazon Sales Rank: #254 in Cell Phone Accessories - Size: US GSM - 16GB - Color: Black - Brand: Motorola - Model: Moto G US - 16GB - Released on: 2013-12-11 - Dimensions: 5.10" h x.46" w x2.60" l.31 pounds Motorola Moto G - US GSM - Unlocked - 16GB.