Oppo A31 smartphone was launched in April 2015. The phone comes with a 4.50-inch touchscreen display with a resolution of 480 pixels by 854 pixels. The Oppo A31 is powered by 1.4GHz quad-core Qualcomm Snapdragon 410 processor and it comes with 1GB of RAM. The phone packs 8GB of internal storage that can be expanded […]