Allview X4 Xtreme has display Size 6.0", operating system Android 7.0. The device has ram 4 GB too, card support is microSD, up to 256 GB (uses shared SIM slot), it has 64 GB, 4 GB RAM hard disk. Back camera 13 MP is awesome, front camera 20 MP is also not bad. X4 Xtreme has power storage, Up to 25 h. Device status is Available