How to fix a glitching phone screen?

Most phone screen glitches can be fixed at home without a trip to a repair shop. A simple restart clears the majority of temporary software faults that cause flickering, freezing, or unresponsive touch. If the problem runs deeper, a few targeted steps on your Samsung device will resolve most cases. Below, we walk through the most common causes and fixes so you can get your screen back to normal quickly.

What causes a phone screen to glitch?

A glitching or flickering phone screen is usually caused by a software fault, a misbehaving app, or a loose internal connection. On Samsung devices, screen issues most often trace back to one of these sources rather than a damaged display, which means many cases are straightforward to fix without any specialist tools.

The most common causes fall into a few clear categories:

App conflicts: A recently installed or updated app can interfere with how your display renders content, causing flickering or stuttering in specific areas of the screen.
Software bugs: Temporary glitches in One UI or Android can disrupt the display driver, producing random flashes or frozen sections.
Overheating: When your Samsung phone gets too hot, it may throttle performance and display erratic screen behavior as a side effect.
Low storage or RAM: Running out of available memory can cause the display to stutter or lag, particularly when switching between apps.
Physical damage: A cracked screen, water exposure, or a loose display connector can produce persistent flickering that software fixes will not resolve.

Identifying which category applies to your situation makes it much easier to choose the right fix. If the glitching started after you installed a new app or updated your phone, software is almost certainly the culprit. If it followed a drop or exposure to moisture, the cause is likely physical.

Does restarting your phone fix a glitching screen?

Yes, restarting your Samsung phone fixes screen glitching in many cases, particularly when the cause is a temporary software fault or a misbehaving app. A restart clears the phone's active memory, stops background processes that may be conflicting with the display, and gives One UI a fresh start. It takes under a minute and costs nothing to try.

To restart your Samsung phone, press and hold the side button until the power menu appears, then tap Restart. If your screen is too unresponsive to navigate the menu, press and hold the side button and the volume down button together for about seven seconds to force a restart.

If the glitching stops after a restart but returns after a day or two, that points to a recurring software issue rather than a one-off fault. In that case, the steps below will help you dig a little deeper and find a lasting fix.

How do you fix a glitching Samsung screen step by step?

To fix a glitching Samsung screen, work through these steps in order, checking after each one whether the problem has stopped. Most cases resolve within the first three steps.

Restart your phone. As covered above, this is always the first step. It resolves a large proportion of temporary screen flickering issues on its own.
Check for a problem app. Go to Settings > Battery and device care > Memory and look for apps consuming unusually high resources. If you installed a new app around the time the glitching started, uninstall it and see if the problem disappears.
Boot into Safe Mode. Safe Mode loads your phone with only Samsung's built-in apps running. To enter it, press and hold the side button, then press and hold Power off until the Safe Mode prompt appears. If the screen glitching stops in Safe Mode, a third-party app is causing it. Uninstall recently added apps one by one until you find the culprit.
Adjust your screen settings. Go to Settings > Display and try reducing the screen refresh rate or turning off Adaptive brightness. Some display glitches are tied to these settings, particularly on Galaxy S and Galaxy Z series phones.
Clear the cache partition. A corrupted system cache can cause persistent display issues. Power off your phone, then hold the volume up button and the side button together until the Samsung logo appears. Use the volume buttons to navigate to Wipe cache partition and confirm with the power button. This does not delete your personal data.
Factory reset as a last resort. If nothing else works, a factory reset will eliminate any deep software fault. Back up your data first via Settings > Accounts and backup, then go to Settings > General management > Reset > Factory data reset.

Can a software update stop screen glitching?

Yes, a software update can stop screen flickering on your Samsung phone, especially if the glitch was introduced by a bug in a previous version of One UI. Samsung regularly releases security patches and system updates that include display-related fixes, and installing the latest update is one of the simplest things you can do to resolve a persistent screen issue.

To check for an update, go to Settings > Software update > Download and install. If an update is available, download it over Wi-Fi and let your phone restart to apply it.

In 2026, Samsung continues to provide regular One UI updates across a wide range of Galaxy devices, including older models that are still within their software support window. Even if your phone is a few years old, it is worth checking whether a recent patch addresses your screen problem before assuming a hardware repair is needed.

When should you take your Samsung phone in for repair?

You should take your Samsung phone in for repair when screen glitching persists after a factory reset, when the display shows physical signs of damage, or when the flickering is accompanied by other hardware symptoms. At that point, the problem is almost certainly hardware-related and cannot be resolved through software fixes at home.

Specific signs that point to a hardware fault include:

Visible cracks, discoloration, or dead pixels on the display
Screen flickering that started after the phone was dropped or exposed to water
Sections of the screen that are permanently unresponsive to touch
The phone overheating consistently, even during light use
Glitching that continues even in Safe Mode and after a factory reset

For Samsung devices, the best first port of call is an official Samsung Service Center. Technicians there are trained specifically on Galaxy hardware, use genuine parts, and can run diagnostic tests that pinpoint the exact cause. If your phone is still under warranty or covered by Samsung Care+, a qualifying repair may cost you nothing at all. You can find your nearest Samsung service location through the Samsung Members app or the Samsung website.

Do not delay a repair visit if water damage is involved. Liquid can corrode internal components quickly, and the sooner a technician inspects the phone, the better the chances of saving it.

Frequently Asked Questions

Can screen glitching damage my Samsung phone permanently if I leave it untreated?

If the cause is software-based, leaving it untreated will not cause permanent damage — it is more of an inconvenience than a risk. However, if the glitching stems from water damage or a loose internal connector, delaying a repair can allow corrosion or further hardware deterioration to spread, potentially turning a fixable problem into a much costlier one. When in doubt, run through the software fixes quickly and book a repair visit if they do not resolve the issue.

How do I know if my screen glitch is caused by a specific app rather than a system-wide issue?

The clearest way to tell is to boot your Samsung phone into Safe Mode, which disables all third-party apps. If the screen glitching stops entirely in Safe Mode, a downloaded app is the culprit rather than the operating system itself. To narrow it down further, uninstall apps one at a time — starting with the most recently installed or updated ones — and restart your phone after each removal until the problem disappears.

Will clearing the cache partition delete my photos, contacts, or app data?

No — wiping the cache partition only removes temporary system files that Android uses to speed up processes. Your personal data, including photos, contacts, messages, and app data, is completely unaffected. It is one of the safest troubleshooting steps you can take, which is why it is worth trying before committing to a full factory reset.

My Samsung screen only glitches when the phone gets warm. Is that a hardware problem?

Not necessarily — heat-related screen glitching is often a software or performance issue rather than a hardware fault. When a phone overheats, it throttles the processor to cool down, which can cause the display to stutter or flicker as a side effect. Try closing background apps, avoiding processor-intensive tasks like gaming or video streaming for extended periods, and checking whether a rogue app is running your CPU at high load. If the overheating is severe and happens even during light use, that warrants a visit to a Samsung Service Center.

Is it safe to use my Samsung phone normally while it is screen glitching?

If the glitching is minor and software-related, light use is generally safe while you work through the troubleshooting steps. However, avoid making important calls, completing financial transactions, or relying on the device for anything critical until the issue is resolved, as an unresponsive or flickering screen could cause input errors. If the phone is also overheating or the display is physically damaged, it is best to limit use and prioritise getting it inspected.

What should I do if a software update actually made my Samsung screen worse?

This does happen occasionally when a One UI update contains a bug that affects certain display drivers or device models. First, check Samsung's community forums or the Samsung Members app to see if other users are reporting the same issue — Samsung typically releases a follow-up patch quickly when a widespread display bug is confirmed. In the meantime, you can try clearing the cache partition, as this often resolves post-update glitches, or contact Samsung Support directly to report the issue and ask about available workarounds.

How much does a Samsung screen repair typically cost, and does Samsung Care+ cover it?

Screen repair costs vary depending on your Galaxy model — flagship models like the Galaxy S and Z series tend to have higher repair costs due to their advanced display technology, while mid-range models are generally more affordable to fix. If you are covered by Samsung Care+, screen damage is typically covered for a reduced service fee rather than the full repair cost, making it significantly cheaper. Check your coverage status through the Samsung Members app or the Samsung website before visiting a service center so you know exactly what to expect.

This content was generated with the help of AI — it may contain mistakes

Daniel van Dorp - CTO / Co-Founder / Blogger

[email protected]

First Samsung device: Galaxy S II

Daniel is the proud co-founder of SamMobile. He joined the SamMobile team in 2011. Most of his spare time is spent enjoying nature (and life in general) with his wife & dog, friends, and family.

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