: Once the code is accepted, your device will be permanently unlocked. Safety and Troubleshooting
If you are troubleshooting hardware or signal issues, Oppo devices include a built-in diagnostic tool: oppo-network-unlock-tool-v-1-0-full-free-download-my-blog
: You must first acquire an official SIMLOCK or REGLOCK code (often available through your carrier or verified unlock services like UnlockBoot ). : Once the code is accepted, your device
: Dial *#899# to open the factory test menu. Technicians use this to verify internal hardware without needing external diagnostic software. : Once the code is accepted
: Open your phone's dialer and enter the code *#3988691# .
: When prompted, type in the SIMLOCK or region unlock code you received.