Unlocked Original Leagoo Lead 4 4gb 4.0 Inch 3g Android 4.2.2 Smart Phone Mtk6572 Dual Core 1.0ghz Ram: 512mb Dual SIM Wcdma & Gsm(white) Brand & Model: Leagoo Lead 4 Operating System: Android 4.2.2 CPU: MTK6572 Dual Core 1.0GHz RAM: 512MB ROM: 4GB Network type: WCDMA & GSM Network 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.