- Go to Settings > About phone > Software information.
- Quickly tap Build number seven or more times and make sure you see the message that says “Developer mode has been turned on” appear. In some cases, you will need to type in your device password.
If you go back to Settings, you will find a new menu Developer options below About phone menu.
- Toggle on the Stay awake feature.
With the Stay awake feature enabled, the screen will not turn off automatically while your device is being charged. Please keep your phone charged for the better test taking environment.