Celkon Campus Crown Q40 has display Size 4.0", operating system Android 4.4. 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 5 MP is awesome, front camera Yes is also not bad. Campus Crown Q40 has power storage, Up to 6 h. Device status is Available