Why are there horizontal lines on my Galaxy Z Flip4 screen?
Why is there a horizontal line with contrasting brightness on my Samsung Galaxy Z Flip 4 screen?
If you notice a horizontal line with contrasting brightness on your Samsung Galaxy Z Flip 4 screen, it could be due to the adaptive refresh rate setting or normal optical characteristics of the foldable display. This issue is often not a defect but can be managed through adjustments in display settings.
1. Why does this issue happen?
The horizontal line with contrasting brightness on your Samsung Galaxy Z Flip 4 screen can occur due to the following reasons:
- Adaptive refresh rate settings may cause brightness differences on screens with repetitive small text on a white background.
- This phenomenon is within the normal optical characteristics of the foldable display and is not considered a defect.
2. How to resolve the issue?
To minimize the visibility of the horizontal line with contrasting brightness, follow these steps:
- Go to Settings.
- Tap on Display.
- Select Motion smoothness.
- Change the setting from Adaptive to Standard mode.
By switching to the Standard mode, you can reduce the likelihood of observing this phenomenon on your screen.
3. Supported Samsung Galaxy devices
This solution applies to the Samsung Galaxy Z Flip 4. Similar display settings may also be available on other Samsung Galaxy devices, including the Galaxy Z Fold series, Galaxy S24, Galaxy S25, and Galaxy A series.
4. Additional things to check
If the issue persists after adjusting the display settings, consider the following:
- Ensure your device is running the latest software version by checking for updates in Settings > Software Update.
- If the horizontal line appears consistently across different apps and screens, it may be worth contacting Samsung Support for further assistance.
5. Related Samsung support topics
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