Original topic:

Main Display Black Line Issue

(Topic created on: 06-12-2025 10:50 PM)
148 Views
MuhammedHisham
Beginner Level 2
Options
Galaxy Z
My phone is samsung z fold 4. Today when I opened the main display of my phone, there was a black color line at the bottom of the display. See. There has been no physical damage. Is there any solution to fix this
0 Likes
3 Comments
cs_member10
Moderator
Moderator
Options
Galaxy Z

Dear Samsung Member,

Greetings from Samsung Customer Support!

At Samsung, we always aim to provide impeccable services to our customers, and we highly regret that you feel this way.

Please follow these easy troubleshooting steps which may help in resolving this issue:

● Kindly restart your device once: To power off through Quick settings, swipe down from the top of the screen. Tap the Power icon in the upper right of the screen (next to the Settings icon), and then tap Power off. Kindly power buttons on the device after by pressing power for 5-7 seconds.

● Update software on device: apps screen > Settings > Software update > Download and install > Download > Install now

● Reset the device:
Note: Kindly create data backup of your device via SMART switch mobile application or http://www.samsung.com/in/support/smartswitch pc suite. Remember Google password before resetting the device because it required during initial setup. If you don't remember the password, then reset (Forgot password) your google account.

Settings > General Management > Reset > Temporary cloud backup or External storage backup > Factory data reset (This will erase all data, including files and downloaded apps.)

If the issue still occurs, please visit the service centre for a physical inspection of your device. You can locate your nearest service centre with this given link: https://www.samsung.com/in/support/service-center/

Warm Regards,
Samsung Customer Support

0 Likes
MuhammedHisham
Beginner Level 2
Galaxy Z
I tried that. But it's still showing the same thing. The display doesn't work either. When I contacted the service center, they said that Z Fold 4 is not among the models that can be replaced with a free display. They say that there will be a fee to change the display.
0 Likes
raj_fold4
Beginner Level 2
Galaxy Z
I too have this problem post one ui 7 upgrade. One ui 7 is buggy and does not work properly in fold 4 devices . When I open main screen it gets blackout . Even after factory reset problem is not solved
0 Likes