How do we rate a Device? Rating a smartphone is a tedious process and a lot of parameters have to be considered before judging the overall performance of the device such as display, camera ...

OPPO F21 is not officially announced yet. The specs mentioned below are based on rumors. The dimension of the smartphone is 162 x 75 x 7.9 mm and it weighs 177 grams. The device supports Dual SIM ...