Asus Zenfone 3 Zoom has display Size 5.5", operating system Android 6.1, up to Android 8; ZenUI 3. The device has ram 4 GB too, card support is microSD, up to 256 GB (uses shared SIM slot), it has 32/64/128 GB, 4 GB RAM; 3 GB RAM (USA) hard disk. Back camera 12 MP is awesome, front camera 13 MP is also not bad. Zenfone 3 Zoom has power storage, . Device status is Available