Randomly locking itself

[Jamsterdm]

Has anyone else started to experience they're s25U randomly locking itself? 

Like I'll be browsing or something then boom, black screen then lock screen, does seem to be more night time use. 

[arianwen27]

Do you have theft protection lock or offline device lock enabled?

Those are my first thoughts on what might be causing it

[Stevo-007]

Hi
I have not had this. The actual locking.

I have had odd issues.

Odd in sense, very occasional, changes like program/app thing.
To weird really to mention.
But your experience brings it to mind strange. Can I now detail my situation no. It's not repeatable. But VERRY strange.
Sorry to be so vague.
--
Steve

[AnnaMaz]

Hello @Jamsterdm,

Can you please run diagnostics on Samsung Members app? That would check if all of the sensors are working correctly. Please also send an error report through Samsung Members app so that the developers can take a look