Z Fold 4 sudden fault

[Hightackle]

Hi all, had a weird issue occur yesterday, can anyone help?

I was getting ready for work yesterday with the fold open on the table and charging, with a YouTube video playing. I suddenly noticed two thick black lines one on each half of the screen about 50% between the edge and the hinge. The video had frozen but audio was continuing. I closed the phone but the front screen wouldn't come on. 

I eventually managed to restart the phone, and now the inner screen will not come on, if I close it up, I have to wait a few minutes for the front screen to come back on. Curiously, WiFi will turn on but won't find any networks, also, Bluetooth will not turn on. 

Would anyone have any ideas?

Thanks in advance

[Bindex]

Hello, out of curiosity have you updated your fold 4?

Also I would suggest doing a clear cache partition this might fix your problem with the inner display not working correctly.

To clear your phone's cache partition:

1. Connect your phone to a PC.
2. Turn off your phone (it won't enter Recovery Mode if it's on).
3. Press and hold the Volume Up and Bixby/Power keys simultaneously.
4. Once the Android Recovery screen appears, release both buttons.
5. Use the Volume Down button to highlight "Wipe cache partition."
6. Press the Power button to select it.
7. Use Volume Down to highlight "Yes," then press Power to confirm.
8. After the cache is cleared, press the Power button again to reboot your device.

[Hightackle]

Thank you for suggesting this, took a couple of goes but I've wiped the cache partition. Unfortunately, nothing has changed on rebooting. 

When it did reboot I got a strange box at the bottom of the lock screen

           PDP

      Backup: fail

Setup-Wizard [Finish]

Not sure if that means anything

[Hightackle]

Also yes, it has recently updated a few times

[Bindex]

I will do some more research once I am on my computer.

[Bindex]

Could you post your software version here?

[Hightackle]

One UI version - 7.0

Android version - 15

[Bindex]

It should look something like this; sorry if I confused you. 

 

[Hightackle]

[Bindex]

Thank you, I will keep looking for a fix, have you reported this issue to Samsung via the app (Send Feedback).