Unnecto Quattro Z has display Size 4.0", operating system Android 4.2.2. The device has ram 512 GB too, card support is microSD, up to 32 GB, it has 4 GB, 512 MB RAM hard disk. Back camera 8 MP is awesome, front camera VGA is also not bad. Quattro Z has power storage, Up to 11 h. Device status is Available