How to Fix Galaxy S23 Screen Flickering: A Comprehensive Guide

Galaxy S23 screen flickering typically comes down to one of three root causes: a software conflict forcing the display refresh rate to cycle incorrectly, cache corruption after a One UI firmware update causing the display driver to misfire, or a hardware issue such as a loose display flex cable or OLED panel damage. As of 2026, most cases are software-related and fully fixable without a trip to a repair shop.

This guide covers every confirmed fix—starting with the easiest—along with model-specific details for the S23, S23+, and S23 Ultra.

Quick-Reference: Galaxy S23 Screen Flickering Fixes at a Glance

Fix	Works Best For	Time Required
Restart the phone	Random/occasional flicker	1 minute
Boot into Safe Mode	Flickering tied to an app	5 minutes
Disable Adaptive Brightness	Low-brightness flicker	2 minutes
Set Motion Smoothness to Standard	Flicker at variable refresh rates	2 minutes
Clear system cache (Recovery Mode)	Post-update flicker	5 minutes
Check Developer Options	Pink/purple flashing overlay	3 minutes
Update One UI firmware	Widespread, persistent flicker	10–20 minutes
Check charger and cable	Flicker only while charging	2 minutes
Factory reset	Nothing else works	30–60 minutes

Fix 1: Restart Your Galaxy S23

Before anything else, a simple restart flushes the RAM and resets display driver state. This resolves a surprising number of intermittent flickering cases, especially if the phone has been running for several days without a reboot.

1. Press and hold the Side Key (power button) and the Volume Down button simultaneously until the power menu appears.
2. Tap Restart.
3. Wait for the device to fully boot, then observe the screen.

If flickering returns within minutes, move on to the next fix.

Fix 2: Boot Into Safe Mode to Isolate Third-Party Apps

Third-party launchers, blue light filter apps, and screen overlay utilities are among the most common causes of Galaxy S23 screen flickering. Safe Mode loads One UI with only Samsung’s default apps running, which lets you instantly confirm whether a downloaded app is responsible.

How to Enter Safe Mode on Galaxy S23

1. Press and hold the Side Key until the power menu appears.
2. Touch and hold the Power off icon on screen.
3. Tap Safe mode when the prompt appears.
4. The phone reboots into Safe Mode (you’ll see “Safe mode” in the bottom-left corner).

If the flickering disappears in Safe Mode, an installed app is the cause. Uninstall apps starting with the most recently added ones. After each uninstall, reboot normally to test. Common culprits include blue light/eye care filter apps (e.g., Twilight, Night Owl), third-party launchers with aggressive animation settings, live wallpaper apps, and any screen recording or casting apps running in the background.

To exit Safe Mode, simply restart the phone normally.

Fix 3: Check Developer Options (Pink or Purple Flashing)

If your S23 screen flashes pink or purple every time the UI updates, this is almost certainly a Developer Options setting—not a hardware failure. The culprits are Show surface updates and Show layout bounds, which are visualization tools that highlight every screen redraw in bright colors.

1. Go to Settings → Developer options. (If you don’t see Developer options, go to Settings → About phone → Software information and tap Build number seven times to unlock it.)
2. Scroll down and ensure these are OFF: Show surface updates, Show layout bounds, and Simulate secondary displays.
3. Restart the phone.

This fix resolves nearly 100% of cases where flickering is described as a “pink flashing” or “purple overlay.”

Fix 4: Disable Adaptive Brightness

The Galaxy S23’s ambient light sensor continuously adjusts screen brightness based on your environment. If the sensor is obstructed by a case, calibrated incorrectly, or fighting with the auto-refresh-rate system, it can cause noticeable brightness fluctuations that look like flickering.

1. Open the Settings app.
2. Tap Display.
3. Toggle off Adaptive brightness.
4. Manually set your preferred brightness level.

Community tip: Many S23 users report that flickering is most visible at low brightness levels. The S23’s OLED panel uses 240Hz PWM dimming, which is most pronounced at low brightness. If disabling Adaptive Brightness alone doesn’t stop it, also try setting manual brightness to 50% or above.

Fix 5: Change Motion Smoothness to Standard (60Hz)

The Galaxy S23 uses an adaptive refresh rate that jumps between 1Hz and 120Hz depending on content. This adaptive switching can occasionally cause visible stutter or flicker, especially in apps not optimized for variable refresh rates.

1. Open the Settings app.
2. Tap Display → Motion smoothness.
3. Select Standard (locks the display to 60Hz).
4. Tap Apply.

If the flickering stops, the issue is tied to the adaptive 120Hz mode. You can try switching back to Adaptive after a future One UI update, which may address the app-specific conflict.

Fix 6: Wipe the System Cache Partition (Recovery Mode)

After a One UI update, corrupted system cache files can cause display driver errors including screen flickering. Wiping the cache partition removes these temporary files without deleting your personal data, photos, or apps.

1. Power the phone off completely.
2. Press and hold Volume Up + Side Key simultaneously.
3. Release both buttons when the Samsung logo appears, then release when the Android recovery screen shows.
4. Use Volume Down to highlight Wipe cache partition.
5. Press the Side Key to select it.
6. Highlight Yes and press the Side Key to confirm.
7. Once complete, select Reboot system now.

System cache rebuilds automatically over the next few minutes of normal use.

Fix 7: Install the Latest One UI Firmware Update

Samsung has released multiple One UI updates that specifically addressed display flickering on the S23 series. Running outdated firmware means you may be experiencing a bug Samsung already patched.

1. Open Settings → Software update.
2. Tap Download and install.
3. If an update is available, download and install it.
4. After the phone restarts, check for flickering.

Keep auto-updates enabled at Settings → Software update → Auto download over Wi-Fi to avoid falling behind on display driver fixes.

Fix 8: Check Your Charger and Cable

Screen flickering that only occurs while the phone is plugged in almost always points to a power delivery issue. Third-party chargers that don’t properly support Samsung’s Adaptive Fast Charging can introduce electrical noise into the display circuit, causing visible flicker while charging.

• Switch to the official Samsung 25W or 45W wall adapter that came with your phone (or a Samsung-certified replacement).
• Try a different USB-C cable—cables degrade over time and can cause intermittent issues.
• Test plugged into a different wall outlet.

If flickering only happens while charging and stops when unplugged, the charger or cable is almost certainly the cause.

Fix 9: Factory Reset (Last Resort)

If all software fixes have failed, a factory reset restores the phone to its out-of-box software state. This rules out any persistent OS-level corruption. Back up your data first—this process erases everything on the device.

1. Go to Settings → General management → Reset.
2. Tap Factory data reset.
3. Review the items that will be deleted, then tap Reset.
4. Tap Delete all to confirm.
5. The phone will reboot and walk you through initial setup.

After the reset, test the screen before reinstalling any apps. If flickering is gone, restore your apps one by one to identify the culprit.

When It’s a Hardware Problem

If flickering persists after all the fixes above—especially if you notice a green tint or discoloration, vertical or horizontal lines that don’t disappear, flickering that started immediately after a drop or impact, or expanding blackout patches—the display panel or flex cable connecting it to the motherboard has likely been physically damaged. No software fix will resolve this.

Repair Options and Costs

Option	Cost	Notes
Samsung warranty repair	Free (if covered)	Covers manufacturing defects within 1 year; does not cover physical damage
Samsung out-of-warranty repair	$99–$199 (S23/S23+)	Higher for S23 Ultra; Samsung Care+ reduces cost significantly
Third-party repair shop	$100–$200	Quality varies; request OEM or OEM-equivalent panels only
Trade-in toward S24/S25	Varies	Worth considering if repair cost approaches phone’s trade-in value

To start a Samsung warranty or repair claim, contact Samsung Support at 1-800-SAMSUNG (1-800-726-7864) or visit samsung.com/us/support. Before sending your phone in, open the Samsung Members app → Get help → Send feedback → Error reports and attach a screen recording of the flickering to speed up diagnosis.

Our Recommendation

Start with the quick wins: restart, then Safe Mode to rule out apps, then check Developer Options if you see pink/purple flashing. Disable Adaptive Brightness and drop Motion Smoothness to 60Hz for display-specific fixes. If flickering started after an update, wipe the cache partition. Charger issues only present while plugged in. Factory reset is the final software option before moving to hardware repair. Samsung’s warranty covers manufacturing display defects—if your S23 is still within one year of purchase and you haven’t dropped it, the repair should be free.