Asus Zenfone Go 2015 has display Size 4.5", operating system Android 5.1. The device has ram 1 GB too, card support is microSD, up to 64 GB (dedicated slot), it has 8 GB, 1 GB RAM hard disk. Back camera 5 MP is awesome, front camera VGA is also not bad. Zenfone Go 2015 has power storage, Up to 11 h (3G). Device status is Available