Samsung Korea Galaxy S3 Mini I8200 8GB Value Edition Unlocked GSM Phone - Retail Packaging - Grey 4-inch Super AMOLED Capacitive Multi-Touchscreen Android v4.2.2 (Jelly Bean), 1.2 GHz Dual-Core Cortex-A9 Processor 5 Megapixel Camera (2592 x 1944 pixels) w/ Autofocus & LED Flash + Front-facing VGA Camera Internal Memory: 8GB, 1GB RAM + micro SD Slot Expandable up to 32GB Wi-Fi 802.11 a/b/g/n, Bluetooth: v4.0, micro USB v2.0, GPS: with A-GPS support 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.