Oppo A91 vs Oppo A31 2020

Oppo A91 vs Oppo A31 2020: Looking to compare Oppo A91 and Oppo A31 2020? Read on to find out the key differences between these two smartphones and decide which one suits your needs better.

Feature	Oppo A91	Oppo A31 2020
Display Size	6.4 inches	6.5 inches
Display Type	AMOLED	IPS LCD
Resolution	1080 x 2400 pixels	720 x 1600 pixels
Processor	Mediatek MT6771V Helio P70	Mediatek MT6765V/CB Helio P35
RAM	8 GB	4 GB
Internal Storage	128 GB	64 GB
Expandable Storage	Yes, up to 256 GB	Yes, up to 256 GB
Main Camera	48 MP (wide) 8 MP (ultrawide) 2 MP (macro) 2 MP (depth sensor)	12 MP (wide) 2 MP (macro) 2 MP (depth sensor)
Front Camera	16 MP	8 MP
Video Recording	1080p@30fps	1080p@30fps
Battery Capacity	4025 mAh	4230 mAh
Charging	VOOC 3.0 Fast Charging	Standard Charging
Operating System	ColorOS 6.1 (based on Android 9)	ColorOS 6.1 (based on Android 9)
Fingerprint Sensor	In-display	Rear-mounted
Face Unlock	Yes	Yes
Dimensions	160.2 x 73.3 x 7.9 mm	163.9 x 75.5 x 8.3 mm
Weight	172 g	180 g
Colors	Dark Blue, Red	Mystery Black, Fantasy White