OPPO A31 The child randomly sets the password of the phone he picked up. The password of the phone is not correct. The power on password is removed

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How can I unlock the machine if I forget the password?

Does the root tutorial need computer operation?

Next, we will explain the course of line brushing and after-sales line brushing package! It supports unlocking the screen lock, account lock, drawing lock, fingerprint lock, application lock, and repair a series of software problems such as the startup fixed screen oppo interface. It is simple to operate and easy to understand the tutorial, and only needs a computer to solve all the problems of machine brushing!