Oppo A77 has display Size 6.56", operating system Android 12, ColorOS 12.1. The device has ram 4/6 GB too, card support is microSDXC, it has 64GB 4GB RAM, 128GB 6GB RAM hard disk. Back camera 48 MP is awesome, front camera 8 MP is also not bad. A77 has power storage, . Device status is Available