ASUS ZenFone 2 Laser Unlocked Smartphone, 3GB RAM, 16GB Storage Unlocked GSM Dual Active SIM Smartphone compatible on GSM Networking including AT&T and T-Mobile Powerful performance with 3GB RAM and Qualcomm Octa-Core Processor 5.5 IPS Full HD Display protected by Gorilla Glass 4; 13MP Rear and 5MP Front Camera Equipped with Laser Autofocus Technology for camera focusing 2-3 faster than traditional smartphone cameras High-capacity 3000 mAh battery  Replaceable for increased longevity