These codes are entered either on the lock screen password prompt or by dialing them into the emergency dialer. 676538 OPPO A16 / A16s: 716654 or 136052 OPPO A16k: 260544 OPPO A15: 638714 General / Older Models: 676538 Free Removal Methods (No PC Required) GsmMarhaba Demo Reset APK : This is a popular tool among technicians.

5.2 Factory reset from Settings or Recovery

If your phone reboots after a reset and asks for a PIN or Google Account credentials, you have triggered . You will need to log in with the original Google account tied to the device or use an FRP bypass tool compatible with your ColorOS version. Issue 2: Demo Mode Returns After Restarting

Once you have access, go to Settings > Apps > App Management .

Retailers use a specific version of ColorOS to showcase the phone’s capabilities. Demo Mode typically: Plays a continuous "Retail Loop" video. Wipes user data and settings after a period of inactivity. Disables the ability to set a screen lock or fingerprint.

For most standard OPPO phones that are not hard-locked into a retail demonstration, the toggle is located within the hidden "Developer Options."

You may have noticed that the demo mode app (often named DemoService or OPPOStoreMode ) cannot be uninstalled normally. That’s because it’s a installed in the /system/priv-app partition. Even if you disable it via ADB commands ( adb shell pm uninstall --user 0 com.oppo.demo ), the phone will often re-enable it on reboot.

: Once finished, select Reboot . The phone will restart as a fresh device. 🧩 Method 4: Third-Party APK (Advanced)