Oppo A57 5G mobile was launched in April 2022. The phone comes with a 90 Hz refresh rate 6.56-inch touchscreen display offering a resolution of 720x1612 pixels (HD+) at a pixel density of 269 pixels per inch (ppi). Oppo A57 5G is powered by an octa-core MediaTek Dimensity 810 processor. It comes with 6GB of RAM. The Oppo A57 5G runs Android 12 and is powered by a 5000mAh battery.

As far as the cameras are concerned, the Oppo A57 5G on the rear packs a dual camera setup featuring a 13-megapixel (f/2.2) primary camera, and a 2-megapixel (f/2.4) camera. The rear camera setup has autofocus. It has a single front camera setup for selfies, featuring an 8-megapixel sensor with an f/2.0 aperture.

The Oppo A57 5G runs ColorOS 12.1 is based on Android 12 and packs 128GB of inbuilt storage that can be expanded via microSD card. The Oppo A57 5G is a dual-SIM (GSM and GSM) mobile that accepts Nano-SIM and Nano-SIM cards. The Oppo A57 5G measures 163.80 x 75.10 x 7.99mm (height x width x thickness) and weighs 186.00 grams. It was launched in Black, Blue, and Lilac colours.

Connectivity options on the Oppo A57 5G include Wi-Fi 802.11 a/b/g/n/ac, GPS, Bluetooth v5.20, USB Type-C, 3G, and 4G (with support for Band 40 used by some LTE networks in India). Sensors on the phone include accelerometer, ambient light sensor, compass/ magnetometer, proximity sensor, and fingerprint sensor.