Middle of screen doesn't recognise S Pen

[GiraffeNeckLong]

I updated the latest software for my Z fold 3, and my S pen no longer is recognised along the crease of the fold.

I use my S Pen quite a lot and create STL files to print on my 3D printer.

Is anyone else experiencing this?

My phone is within the years guarantee, but it sounds like an absolute nightmare to return.

[BandOfBrothers]

Have you tried a soft reboot by turning the phone Off and then back On @GiraffeNeckLong  ?

Also go through your sPen settings to see if you can reset the connection.

Finally you could try >

• Clear Cache Files from the phone's System Partition Section  > https://www.samsung.com/uk/support/mobile-devices/how-do-i-clear-the-cache-on-my-device/ You may need to insert your earphones or hook upto a powered On Laptop to access the Clear Partition Section. This may help with lag or stutters as this clears the phone of old/unused or broken cache files.There is also a Repair Apps option in the Menu System too. 
• Safe Mode  > https://www.samsung.com/uk/support/mobile-devices/how-to-start-my-galaxy-device-in-safe-mode/ turns off downloaded apps and themes etc which may highlight an app or theme that's causing conflict. 
• Factory Reset after a back up as a last resort. 

A Samsung Service Centre or Samsung Experience Store can assess your phone in-house or in some regions Samsung offer a doorstep repair service.

Other than that if all fails and you can't visit a Service Centre then Yes you may have to send it away.

Take time and date stamped photo's of the phone with one of it turned On.

Before you do contact Customer Support via your Samsung Members app as they maybe able to help.

Also try a Google Search. 

If I can be of any further help then please don't hesitate. Take care.  😎 

[GiraffeNeckLong]

I've tried most of what you helpfully suggested BandOfBrothers (thank you btw, I forgot about clearing the cache), but have had no luck. Tried everything short of a factory reset. Will have to start backing up a lot of files and start down the path of all returns.

Interestingly, however, when my fold 3 is opened at an angle less than 40°, it does seem to completely recognise the S Pen along the crease. When the fold is opened greater than 40° or fully, the crease no longer recognises S Pen input (either direct contact or hovering).

I've never owned a magnetic case or really had my device near any strong magnets, so I am very confused as to why it's behaving like this. I do suspect it may have something to do with the latest software update as I have developer options enabled and a few settings tweaked.

Anyways, thank you for responding, it's very much appreciated