Asus Zenfone 4 2014 has display Size 4.0", operating system Android 4.3, up to 4.4.2. The device has ram 1 GB too, card support is microSD, up to 64 GB (dedicated slot), it has 4/8 GB, 1 GB RAM hard disk. Back camera 8 MP is awesome, front camera VGA is also not bad. Zenfone 4 2014 has power storage, Up to 10 h. Device status is Available