OPPO A57

13MP primary camera with LED flash and 16MP front facing camera
11.37 centimeters (5.2-inch) with 1280 x 720 pixels resolution
Android v6 Marshmallow operating system with 1.4GHz Qualcomm MSM8940 octa core processor, 3GB RAM, 32GB internal memory expandable up to 256GB and dual SIM (nano+nano) dual-standby (4G+4G)
2900mAH lithium-ion battery
1 year manufacturer warranty for device and 6 months manufacturer warranty for in-box accessories including batteries from the date of purchase