Oppo A77 4g has display Size 6.56", operating system Android 12, ColorOS 12.1. The device has ram 4 GB too, card support is microSDXC, it has 64GB 4GB RAM, 128GB 4GB RAM hard disk. Back camera 50 MP is awesome, front camera 8 MP is also not bad. A77 4g has power storage, . Device status is Available