Oppo A91

  • Oppo
  • Last Updated: 30th October 2025
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Key Specs
  • Display 6.40-inch (1080x2400)
  • Processor octa-core
  • Front Camera Unspecified
  • Rear Camera 48MP + 8MP
  • RAM 8GB
  • Storage 128GB
  • Battery Capacity 4000mAh
  • OS Android 9
Market Status Released
Release Date 20th December 2019
Official Website oppo.com

Oppo A91 Summary

Oppo A91 mobile was launched on 20th December 2019. The phone comes with a 6.40-inch touchscreen display offering a resolution of 1080x2400 pixels. The display sports Gorilla Glass for protection. Oppo A91 is powered by an octa-core processor. It comes with 8GB of RAM. The Oppo A91 runs Android 9 and is powered by a 4000mAh non-removable battery. The Oppo A91 supports VOOC fast charging.

As far as the cameras are concerned, the Oppo A91 on the rear packs a 48-megapixel primary camera, and an 8-megapixel camera. The rear camera setup has autofocus. It sports an Unspecified camera on the front for selfies.

The Oppo A91 runs ColorOS is based on Android 9 and packs 128GB of inbuilt storage. It was launched in Black, Blue, and Red colours.

Connectivity options on the Oppo A91 include Wi-Fi 802.11 a/b/g/n and GPS with active 4G on both SIM cards. Sensors on the phone include accelerometer, ambient light sensor, compass/ magnetometer, proximity sensor, and fingerprint sensor.

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Oppo A91 Full Specifications

General
Brand Oppo
Model A91
Release date 20th December 2019
Form factor Touchscreen
Battery capacity (mAh) 4000
Removable battery No
Fast charging VOOC
Colours Black, Blue, Red
Display
Screen size (inches) 6.40
Touchscreen Yes
Resolution 1080x2400 pixels
Protection type Gorilla Glass
Hardware
Processor octa-core
RAM 8GB
Internal storage 128GB
Camera
Rear camera 48-megapixel + 8-megapixel
Rear autofocus Yes
Rear flash Yes
Front camera Unspecified
Front flash No
Software
Operating system Android 9
Skin ColorOS
Connectivity
Wi-Fi Yes
Wi-Fi standards supported 802.11 a/b/g/n
GPS Yes
Bluetooth Yes
Active 4G on both SIM cards Yes
Sensors
Fingerprint sensor Yes
Compass/ Magnetometer Yes
Proximity sensor Yes
Accelerometer Yes
Ambient light sensor Yes
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