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Use Safe Mode to check whether an installed app may be affecting your Samsung Galaxy’s touchscreen: repeat the same action that normally triggers the problem and see whether it still happens. Safe Mode is an app-isolation check, not a test of every screen area; Samsung Members has a separate Touch screen diagnostic for that.
Test the same touchscreen symptom in Safe Mode
- Open the power menu. Hold the Power/Side button and Volume down together, or open the power menu from the Quick panel. Samsung documents both routes; the available controls can vary by model and software version. Samsung’s touchscreen troubleshooting guide
- Choose Safe Mode. Touch and hold Power off until Safe mode appears, then tap Safe mode. Samsung also documents opening the power menu with the Side and Volume down buttons before holding Power off. Menu labels and steps may differ by model and software version. Samsung’s boot troubleshooting guidance
- Repeat what usually causes the problem. For example, try the same screen area or repeat the ordinary action during which touches are missed or response slows. This is an observation of your existing symptom, not a formal screen-area test.
- Compare the result with normal operation. Use the table below to interpret the change. Safe Mode runs core applications and helps isolate possible third-party app problems, according to Samsung.
- Restart to leave Safe Mode. Samsung says restarting the phone or tablet returns it to normal operation. Samsung touchscreen guidance
What the Safe Mode result can tell you
| What you observe | What it suggests | Next step |
|---|---|---|
| The symptom occurs during normal use but stops in Safe Mode | A third-party app may be responsible; the change is a clue, not proof. | Start by uninstalling the most recently installed app from before the issue began, then check whether the symptom changes. |
| The symptom continues in Safe Mode | Samsung says a hardware issue is likely, but this observation alone does not confirm a hardware fault. | Contact Samsung service or arrange a repair assessment. |
Samsung’s guidance supports using Safe Mode to help distinguish app-related issues from other causes; it does not provide a failure rate or make this a definitive hardware diagnosis. Samsung boot troubleshooting guidance
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Use Samsung Members for a direct screen-area check
Safe Mode tells you whether the symptom changes when third-party apps are unavailable. To check touch response across screen areas, Samsung documents a separate Touch screen test in Samsung Members. The app must be installed, and its availability and labels can vary by model, software version, app version, and region. Samsung US touchscreen guidance and Samsung Saudi Arabia touchscreen guidance, updated August 23, 2026
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- Open Samsung Members.
- Choose Support or Diagnostics, or open Phone diagnostics, depending on the version.
- If a full scan starts, stop it so you can select an individual test.
- Select Touch screen, then touch the unfilled areas on the display with your finger until they are filled.
- Review the diagnostic result.
This diagnostic is different from checking whether the original symptom stops in Safe Mode. Samsung also describes its display troubleshooting options here: Troubleshoot display issues on your Samsung Galaxy device.
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- Compatibility Check: Ensuring the perfect fit for your device for Samsung Galaxy Tab A9 Plus 11.0" (SM-X210, SM-X215, SM-X216B), verify compatibility before ordering.
- Model Note: Not for Samsung Tab A9
- Repair Scope: Engineered to address problems such as cracked or broken screens, aging display, color distortion, non-functional or slow touch respons on your device.
- Quality Support: Each LCD digitizer screen replacement undergoes rigorous testing prior to shipping. In the event of any quality concerns, feel free to reach out, and we will promptly provide a satisfactory resolution.
- Kit Contents & Prep: Includes 1x LCD Digitizer Assembly Screen Replacement. Prior to any testing or installation, ensure the cable is neatly folded or securely adhered in place.
If touch response remains poor
Samsung lists several possible contributors to poor touch response, including temporary system errors, third-party apps, settings, moisture, screen protectors or other accessories, and physical damage. These are possibilities rather than a diagnosis of your phone; the same symptom can have more than one cause. Samsung US guidance and Samsung Saudi Arabia guidance
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