Vivo S1 Pro has display Size 6.38", operating system Android 9.0; Funtouch 9.2. The device has ram 8 GB too, card support is microSD, up to 256 GB (uses shared SIM slot), it has 128GB 8GB RAM hard disk. Back camera 48 MP is awesome, front camera 32 MP is also not bad. S1 Pro has power storage, . Device status is Available