 This device's battery varies from different carriers, and it will either have a 3-pin battery, which is widely used and sold, or a 4-pin battery.An alternative 'upgraded' Galaxy S III Mini version (SM-G730A) is available from the US carrier AT&T, which features a different processor (Qualcomm 1.2 GHz dual-core Snapdragon 400), NFC, 2000 mAh battery, and 4G LTE data speeds, among other differences.It retains the same 4-inch (800×480 pixels), Super AMOLED screen as the original 'international' Galaxy S III Mini.