Microsoft Lumia 640

Step 1 of 6

Set display brightness

Slide your finger down the display starting from the top edge of your phone.
Press ALL SETTINGS.

Step 2 of 6

Set display brightness

Press brightness.

Step 3 of 6

Set display brightness

Press the indicator next to "Automatically adjust" to turn the function on or off.

Step 4 of 6

Set display brightness

If you turn off the function:
Press the field below "Level".

Step 5 of 6

Set display brightness

Press the required setting.

Step 6 of 6

Return to the home screen

Press the home icon to return to the home screen.

Set display brightness

Slide your finger down the display starting from the top edge of your phone.
Press ALL SETTINGS.

Press brightness.

Press the indicator next to "Automatically adjust" to turn the function on or off.

If you turn off the function:
Press the field below "Level".

Press the required setting.

Press the home icon to return to the home screen.