Oppo A3s The phone comes with a 6.20-inch touchscreen display with a resolution of 720 pixels by 1520 pixels. The Oppo A3s is powered by 1.8GHz octa-core processor and it comes with 2GB of RAM. The phone packs 16GB of internal storage that can be expanded up to 256GB via a microSD card. As far as the cameras are concerned, the Oppo A3s packs a 13-megapixel (f/2.2) + 2-megapixel (f/2.4) primary camera on the rear and a 8-megapixel front shooter for selfies. The Oppo A3s is powered by a 4230mAh. It measures 156.20 x 75.60 x 8.20 (height x width x thickness) and weighs 168.00 grams. Connectivity options include Wi-Fi, GPS, Bluetooth and Micro-USB. Sensors on the phone include Compass/ Magnetometer, Proximity sensor and Accelerometer.