Huawei p8 double-click to light up the screen. Failed gesture to unlock the phone. The screen is always on.

Dear, about double-clicking to light up the screen: 1. Please confirm that "Settings-Gesture Control-Double-click-Double-click Wake-up Screen" is turned on. 2. Confirm whether the photoreceptor is blocked. If the blocked mobile phone checks the proximity light, it will be considered as the proximity state, and it will be considered that the double-click operation was triggered by mistake, resulting in the mobile phone not being lit. 3. Double-click operation is not recognized within one centimeter of the border. Please double-click the center of the screen. When double-clicking, the click interval should be kept within 500ms, and the interval between two clicks should not be too large. About unlocking: press the power button to wake up the screen, and then according to the screen display, unlock it by dragging, entering a PIN, entering a pattern, etc. I suggest you try the operation again.