There is no one definitive answer to this question - it depends on your specific circumstances. Generally speaking, you can unlock your OPPO Security Center by using the following steps:1. first, open the OPPO Security Center app and log in2. next, open the Settings app and select the Security tab3. next, select the Unlocking option under the Security settings4. next, enter your OPPO security code and click the unlock button5. your OPPO Security Center will now be unlocked