How this is done differs between various Huawei devices, but on the Nexus 6P all you need to do is hold Vol Down + Power while the device is shut down. Then when you are within the bootloader menu
~~~~~Hi! Don't forget to hit the "Thanks" button on this video, if you can, and join our channel community here - 1. Start by opening the settings menu on your IoT device. This can usually be done by tapping on the gear icon or by swiping down from the top of the screen and selecting the settings option. 2 To access hidden Android menu. From the home screen, go to Projector Settings > About > Software Version. Press OK on the remote 5 times (fast) On the right side, you’ll see the hidden menu open up. If the WiFi section opened up, just press the BACK button. Then, go to Device Preferences. How to Access System UI Tuner on Android. To check out the System UI Tuner on your device, download the free System UI Tuner app from the Play Store. Launching this app will open the menu on your phone, which is its only purpose. On our Pixel 4 running Android 12, the following categories are available in the System UI Tuner: Status bar. 2XPfz.