Oppo A57 has display Size 5.2 Inches, operating system Android 6.0. The device has ram 3 GB too, card support is microSDXC, it has 128GB 6GB RAM, 128GB 8GB RAM hard disk. Back camera 13 MP is awesome, front camera 8 MP, f/2.0, 26mm (wide) is also not bad. A57 has power storage, . Device status is Available