Oppo A12 mobile was phone comes with a 6.22-inch touchscreen display offering a resolution of 720x1520 pixels. The display sports Gorilla Glass for protection. Oppo A12 is powered by an octa-core MediaTek Helio P35 (MT6765) processor. It comes with 3GB of RAM. The Oppo A12 runs Android 9 and is powered by a 4230mAh non-removable battery.

As far as the cameras are concerned, the Oppo A12 on the rear packs a 13-megapixel (f/2.2, 1.12um-micron) primary camera, and a 2-megapixel (f/2.4) camera. The rear camera setup has autofocus. It sports a 5-megapixel camera on the front for selfies with an f/2.4 aperture and a pixel size of 1.12um-micron.

The Oppo A12 runs ColorOS 6.1.2 is based on Android 9 and packs 32GB of inbuilt storage that can be expanded via microSD card (up to 256GB) with a dedicated slot. The Oppo A12 is a dual-SIM (GSM and GSM) mobile that accepts Nano-SIM and Nano-SIM cards. The Oppo A12 measures 155.90 x 75.50 x 8.30mm (height x width x thickness) and weighs 165.00 grams. It was launched in Black and Blue colours. It bears a polycarbonate body.

Connectivity options on the Oppo A12 include Wi-Fi 802.11 a/b/g/n, GPS, Bluetooth v5.00, 3G, and 4G (with support for Band 40 used by some LTE networks in India) with active 4G on both SIM cards. Sensors on the phone include accelerometer, ambient light sensor, compass/ magnetometer, gyroscope, proximity sensor, and fingerprint sensor.

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