Blu C4 has display Size 4.0", operating system Android 8.1 Oreo. The device has ram 512 GB too, card support is microSD, up to 64 GB, it has 8 GB, 512 MB RAM hard disk. Back camera 5 MP is awesome, front camera 5 MP is also not bad. C4 has power storage, Up to 18 h (2G) / Up to 13 h (3G). Device status is Available