LG Optimus L3 II E425 Unlocked GSM Android Cell Phone - White OS Android OS, v4.1.2 (Jelly Bean) Chipset Qualcomm MSM7225A Snapdragon CPU 1 GHz GPU Adreno 200 Sensors Accelerometer, proximity, compass 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.