Oppo A57s official Pictures. Oppo A57s is a Smartphone of oppo. The Oppo A57s Android Smartphone. Announced Aug 2022. Features 6.56″ Display, MediaTek MT6765G Helio G35 Chipset, 5000 MAh Battery, 64 GB Storage, 4 GB RAM, Panda Glass. Oppo A57s price starts.