S Pen Lines Not Auto-Straight on Lock Screen / Screen Off Notes

[EmpireDior]

I’ve noticed an issue with the S Pen when using it to write or draw on the lock screen (Screen Off Memo / Samsung Notes). When I draw lines, they follow my hand movement exactly and stay bent or uneven, even though the auto-straight or shape correction option is enabled in Samsung Notes settings.

What confuses me is that I’ve seen other users draw lines with the S Pen and their lines automatically straighten, especially when drawing slowly or holding the pen briefly at the end. In my case, this doesn’t happen — the line remains curved the same way I draw it.

I want to know if auto-straightening is supposed to work on lock screen notes and screen-off writing, or if it only applies inside Samsung Notes after unlocking the phone. Is there another setting I need to enable, a specific pen tool I should use, or is this a limitation of screen-off memos?

If anyone has experienced this or knows how to make S Pen lines auto-straight in this mode, I’d really appreciate your guidance.

[GaryB82 · Accepted solution]

Did you happen to recently add a magsafe case to your phone if so the Magnets in the case interfere with the spen

[EmpireDior]

Thanks I think I figured part of the issue — my phone (or S Pen) was sticking to a magnetic part of my PC. Could that be why the lines on Screen Off Memo / lock screen aren’t auto-straightening?
Has anyone experienced interference with the S Pen from magnets or nearby metal surfaces? I’ll try away from my PC and see if it works better.

[GaryB82]

That could have caused the inference between the spen and the screen causing the wavy lines 

[Mindblowingself]

It should work on screen off memo, mine works , if you have the feature on then it could be that you are not waiting enough to lift the pen , and it's working in regular notes right ?

[EmpireDior]

Yes when written with Spen it works

[EmpireDior]

Thanks! Yes, it works fine in regular Samsung Notes after unlocking, but on Screen Off Memo / lock screen, the lines just follow my hand. Do you know if auto-straight is supposed to work in that mode too, or is it only for unlocked Notes?

[LongHiker]

@EmpireDior To engage the Auto straighten, you must hold the S Pen at the end of the line (or other shape) for a second or two. Then the line will snap to straight. It does NOT do it while you are moving the S Pen. 

[EmpireDior]

I haven’t tried holding the S Pen at the end of the line yet — I’ll give that a shot. When you do this, does it work the same on Screen Off Memo, or only after unlocking the phone?

[LongHiker]

It works the same Screen off or phone unlocked.