Enter the Settings page of the mobile phone, the default is the normal page, we need to click the display in the upper right corner to enter the mobile phone display Settings.
In the display, find the backlight time text menu, click, enter the backlight time Settings, which is what we often say how long the screen is not touched before the screen is black.
Choose your own appropriate time, the current default is not used for 30 minutes, the black screen will save energy, the minimum value of the current phone model is 15 seconds, that is, unless the screen is manually closed, the shortest time to automatically close the screen is 15 seconds later.
Choose a time of your preference, such as one minute, and then press the back button on your phone to exit the backlight time setting, which saves the new backlight time.
At the same time, we can also adjust the brightness of the screen through the brightness on the interface, protect the eyes at the same time, but also through the relatively low brightness to achieve the purpose of power saving.
Open the mobile desktop, click the system built-in setting function;
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2. Click Display and brightness on the Settings page;
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3, find and open the lock screen magazine and wallpaper;
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4. Click Set Wallpaper in Settings and open it;