Celkon A40 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 (dedicated slot), it has 4 GB, 512 MB RAM hard disk. Back camera 5 MP is awesome, front camera VGA is also not bad. A40 has power storage, . Device status is Available. Released 2014, January