If you cannot perform a hard reset, or if the demo mode returns after a reset, the phone is locked to a retail server. You will need to use a Windows PC and tool software. Using Oppo Unlock Tools (MRT/UMT)
Note: If Developer Options is not visible, go to and tap Build Number 7 times until a prompt says "You are now a developer." Inside Developer Options, scroll down to find Demo Mode . Toggle the switch to Off .
If the device persists in Demo Mode after a factory reset, it means the demo software is flashed onto the device's ROM at a system level. This is common for units sold by third-party liquidators.
Sometimes, resetting the phone in a specific way removes the retail demo app. Go to > Additional Settings > Back up and Reset . Select Erase all data (factory reset) .
Removing demo mode from an OPPO phone can range from a two-second toggle to a full firmware reinstall. Start with the simplest method and move forward only if the demo mode persists. If you are uncomfortable with command-line tools or secret codes, the most reliable path is to take the phone to an OPPO service center where they can flash the correct consumer firmware instantly.
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The system will display a 4-digit verification code on the screen. Type this code in to confirm your identity. Tap and wait for the progress bar to complete.
What is the exact ? (e.g., Oppo A57, Reno 10) Which ColorOS version is currently installed?
: Your phone will restart and perform a deep reset that wipes the "Retail Mode" partition. Troubleshooting & Tips How to Remove Demo Mode on Oppo AX7 - Expert Q&A
If demo mode persists, perform a factory reset (backup data first) via .
G. Seek Official Support