Revel R.40 Dual Sim, Gsm, Quad Band, Unlocked World Smartphone, Android 4.2 - White Quad band gsm unlocked (dual band umts)|4gb internal memory + micro sd card capable 4g hspa+ (gsm band: 850/900/1800/1900 | 3g band umts 850/1900) Dual sim: Use 2 sim cards at once, great for international travel Wi-Fi|Bluetooth compatible|5mp camera