OPPO A31 (Mystery Black, 6GB RAM, 128GB Storage)

12+2+2MP triple rear camera (12MP main camera+2MP macro lens+2MP depth camera) 

8MP front camera. OTG : Supported NFC : No 

Memory, Storage & SIM: 6GB RAM | 128GB internal memory expandable up to 256GB 

Dual SIM (nano+nano) dual-standby (4G+4G) 

Android Pie v9.0 based on ColorOS 6.1 operating system 

– 4230mAH lithium-polymer battery providing talk-time of 45 hours and standby time of 450 hour