https://community.o2.co.uk/t5/Android/Samsung-A40-Background-Screen/m-p/1450370#M77471 <P>Drag the screen down and then scroll across to see if blue screen filter is on <a href="https://community.o2.co.uk/t5/user/viewprofilepage/user-id/4441284">@jan0563</a>&nbsp;</P> Fri, 26 Mar 2021 16:46:16 GMT jonsie 2021-03-26T16:46:16Z https://community.o2.co.uk/t5/Android/Samsung-A40-Background-Screen/m-p/1450368#M77470 <P>My Samsung A40 background screen has gone into night mode while browsing and cannot change it back to day mode. How do I change it back</P> Fri, 26 Mar 2021 16:41:11 GMT https://community.o2.co.uk/t5/Android/Samsung-A40-Background-Screen/m-p/1450368#M77470 jan0563 2021-03-26T16:41:11Z https://community.o2.co.uk/t5/Android/Samsung-A40-Background-Screen/m-p/1450370#M77471 <P>Drag the screen down and then scroll across to see if blue screen filter is on <a href="https://community.o2.co.uk/t5/user/viewprofilepage/user-id/4441284">@jan0563</a>&nbsp;</P> Fri, 26 Mar 2021 16:46:16 GMT https://community.o2.co.uk/t5/Android/Samsung-A40-Background-Screen/m-p/1450370#M77471 jonsie 2021-03-26T16:46:16Z