General
Display
Performance
Camera
Battery
Network
Connectivity
Sensors
Other
Oppo A91 Overview
The Oppo A91 is an Android device from OPPO, released in 2019. It combines the Mediatek MT6771V Helio P70 (12 nm) and a 6.4-inch display, running Android 9.0 (Pie). This page tracks its full specifications, root status, and the bootloader and recovery notes that apply to it.
Root the Oppo A91
The Oppo A91 is a 2019 Android device from OPPO. It runs the Mediatek MT6771V Helio P70 (12 nm), a MediaTek platform, flashed via SP Flash Tool on many models with BROM as the deep-recovery path. Shipped software: Android 9.0 (Pie), upgradable to Android 11, ColorOS 11. For this model the realistic path is: the brand-specific unlock described below, followed by Magisk via patched boot image (fastboot). Typical hands-on time is 2–4 hours (after eligibility check).
Difficulty
Advanced — verify unlock eligibility first
Typical time
2–4 hours (after eligibility check)
Method
Magisk via patched boot image (fastboot)
Bootloader unlock on OPPO
OPPO gates unlocking behind a "deep testing" application that is approved only for select models and regions — availability must be confirmed per device before any commitment.
Platform notes
MediaTek platforms flash through SP Flash Tool rather than plain fastboot on many models, and expose BROM mode as a deep-recovery path. Correct scatter/firmware matching matters more here than on Snapdragon devices.
Before you start
- Bootloader unlocking factory-resets the device on almost all models — back up everything first.
FAQ
Can I root the Oppo A91?
Only if this exact model and region are eligible for a bootloader unlock. OPPO gates unlocking behind a "deep testing" application that is approved only for select models and regions — availability must be confirmed per device before any commitment. Once an unlock is approved, root is Magisk via patched boot image (fastboot).
Does the Oppo A91 support custom recovery (TWRP)?
That depends on community support for this exact model — verify a build exists for its codename before flashing anything. TWRP is not required for root: Magisk installs by flashing a patched boot image via fastboot.
Will root the Oppo A91 void my warranty?
OPPO will generally treat a rooted Oppo A91 as outside warranty while it is modified. Restoring full stock firmware before a service visit usually restores normal treatment in practice, and consumer law in some regions (such as the EU) may still cover defects unrelated to root.
What Android version does the Oppo A91 run?
It runs Android 9.0 (Pie), upgradable to Android 11, ColorOS 11. The specifications table on this page lists the full software details.
Similar Devices
Oppo A6s Pro
Oppo A6s (India)
Oppo Watch X3
Oppo K14
Oppo Find N6
Oppo Reno15 F
Oppo Reno15
Oppo Reno15 Pro (India)