The screen brightness of Nokia Lumia 920 is set automatically by default. But, you may have found the screen of your Smartphone to be too bright or too dim. Nokia Lumia 920 has made a way for each user to adjust the phone brightness manually.
1. From start screen, access Settings.
2. Scroll down and then choose Brightness.
3. Switch Automatically Adjust icon to off to de-active it.
4. Select the desired level of brightness that you want.
5. When you finish, tap Done.
If you want to extend your batery life, low brightness screen may be helpful.
It’s so easy to adjust your phone’s brightness. Hope it’s helpful for you!