Blu Advance 4 M has display Size 4.0", operating system Android 6.0. The device has ram 512 GB too, card support is microSD, up to 64 GB, it has 4 GB, 512 MB RAM hard disk. Back camera 2 MP is awesome, front camera VGA is also not bad. Advance 4 M has power storage, Up to 17 h (2G) / Up to 12 h (3G). Device status is Available