Vivo Y91 has display Size 6.22", operating system Android 8.1; Funtouch 4.5. The device has ram 3 GB too, card support is microSD, up to 256 GB, it has 32 GB, 3 GB RAM or 16 GB, 2 GB RAM hard disk. Back camera 13 MP is awesome, front camera 8 MP is also not bad. Y91 has power storage, . Device status is Available