How to return screen brightness to default level I accidentally changed the brightness on the iPhone SE ios 13.3   How do I change the screen brightness back to the default level, and if this is impossible, can someone tell me what the default level is?  Thanks.
If you go to Settings on your iPhone and scroll down you should see a tab for &quot;Display &amp; Brightness&quot;. Tap this tab and you'll immediately see a slider marked &quot;Brightness&quot;. There is no default level as such (default is to auto-adjust to ambient light levels) but you can adjust the slider to any level you want.