Allview V4 Viper has display Size 5.7", operating system Android 9.0. The device has ram 2 GB too, card support is microSD, up to 128 GB (uses shared SIM slot), it has 16GB 2GB RAM hard disk. Back camera 8 MP is awesome, front camera 5 MP is also not bad. V4 Viper has power storage, . Device status is Available