Technician helping troubleshoot Samsung phone touchscreen not responding in some areas

Steve H.

Reviewed for technical accuracy

Specialities: Samsung touchscreen issues (unresponsive touch zones, dead spots, partial screen response), display calibration, software vs. hardware diagnosis, safe cleaning and reset methods

Samsung touchscreen unresponsive in corners, edges, or middle — how to tell if it’s software, dirt, or hardware damage before you replace anything

Technician avatar Technician
I hear you. When your Samsung touchscreen stops responding in certain areas, it’s frustrating because you’re not sure if the phone is actually broken or if something simpler is happening.

Trust moment: let’s not assume the worst or rush into repairs. We’ll start with the safest checks first, and you can stop at any point if you’re uncomfortable.

Quick start: does the unresponsive area stay in the same spot (like the top-left corner), or does it move around when you rotate the phone?
Customer
It’s always the right side of the screen. I can’t tap anything on that side. It’s a Samsung Galaxy A52, about two years old. The rest of the screen works fine.
Technician avatar Technician
That’s a helpful clue. A consistent dead zone (always the right side) is different from random freezes or slow response. That usually points to one of three things: software calibration, physical pressure or damage, or a hardware touch controller issue.

Before we go deeper: has the phone been dropped, gotten wet, or exposed to heat recently? And when did this start — was it sudden or gradual?
Customer
I dropped it about a month ago, but I didn’t think it broke. The screen looks fine, no cracks. It started a few days ago. I didn’t connect it to anything new or install anything weird.
Technician avatar Technician
That timeline matters. A drop a month ago, then the issue appearing later, suggests the touch controller might have been stressed and is now failing. But we’re not there yet — let’s rule out easier causes first.

Trust moment: I don’t want you opening the phone or forcing anything. We’ll use only safe, reversible checks.

Question: does the right side respond if you press very hard, or is it completely dead no matter how much pressure you use?
Customer
Even pressing hard doesn’t work. It’s like that part of the screen doesn’t exist. But the left side is totally normal.
Technician avatar Technician
That tells us something. If pressing harder doesn’t help, it’s not a simple calibration issue. It’s more likely a hardware problem — either the touch digitizer (the layer that detects touches) or the controller chip underneath.

Let’s do two quick software checks to be thorough, then we’ll know more:
1) Restart the phone (power off completely, wait 30 seconds, power on).
2) Check if the issue happens in every app (Settings, Phone, Messages) or only in certain ones.

Does the unresponsiveness show up everywhere, or only in some apps?
Customer
It’s everywhere. I tried opening different apps and the right side never responds. I did restart it once, but nothing changed.
Technician avatar Technician
That’s clear. When a dead zone appears everywhere and restart doesn’t fix it, we’re looking at either a hardware touch controller problem or physical damage to the digitizer layer (the sensor under the glass).

Given the drop a month ago, here’s what’s likely: the impact stressed the touch digitizer or the controller chip, and now that zone is failing. The good news is the display itself (the picture) is fine, so it’s not a full screen replacement in most cases.

One more check: if you open Settings and go to “About phone,” does the phone feel warm on the right side, or is it normal temperature?
Customer
It feels normal. Not hot or anything. So what does that mean? Is the phone broken?
Technician avatar Technician
Not “broken” in the sense that it won’t turn on or work at all. But the touch sensor on the right side isn’t responding, and a restart didn’t fix it. That points to a hardware issue, not a software one.

Here’s what we know:
• The display picture is fine.
• The unresponsiveness is consistent and isolated to one area.
• Restarting didn’t help.
• There was a drop a month ago.

This usually means the touch digitizer or its controller is damaged. It’s not something a software reset or app uninstall will fix. The phone is still usable (you can navigate with the left side), but that right zone will stay unresponsive unless the hardware is repaired or replaced.
Customer
So I need to send it for repair? Is there anything else I can try? I’m worried about the cost.
Technician avatar Technician
I understand the concern. Before you commit to repair, let’s try one more thing that’s completely safe: a factory reset. This is a last-resort software check, but it’s worth doing because if there’s any software touch calibration issue hiding, it will clear it.

Trust moment: I don’t want you to lose data. Back up your contacts, photos, and important messages to Google Drive or Samsung Cloud first. Then, go to Settings > General management > Reset > Factory data reset.

Fair warning: this will erase everything on the phone, so backup first. If the right side still doesn’t respond after the reset, then we know it’s definitely hardware.
Customer
That’s a big step. How long does a factory reset take? And if it doesn’t fix it, I’m out of luck?
Technician avatar Technician
A factory reset usually takes 5–15 minutes. After it finishes, the phone will restart and feel like new (but empty until you restore from backup).

If the right side still doesn’t respond after the reset, then yes, it’s hardware. But you’ll have confirmed it’s not a software glitch, which is valuable information for a repair technician. They’ll know to replace the digitizer or touch controller, not waste time on software troubleshooting.

If you don’t want to do a factory reset, that’s fine too. You can still use the phone with the left side working, and take it to a Samsung service center or a trusted repair shop for diagnosis. They can test the touch controller with equipment you don’t have at home.
Customer
I think I’ll try the factory reset since you explained it. But I’m nervous about losing things. How do I make sure my backup works?
Technician avatar Technician
Good instinct. On a Samsung Galaxy A52, go to Settings > Accounts and backup > Samsung Cloud. Make sure your Samsung account is signed in, then tap “Backup” to start. It will back up contacts, messages, photos, and app data. You’ll see a progress bar.

While that’s running, also open Google Drive on your phone and make sure your Google account is signed in. Google Drive auto-backs up photos and important files if you enable it.

Once both backups show “completed,” you’re safe to do the factory reset. After the reset, sign back into both accounts and your data will restore automatically.
Customer
Okay, that makes sense. So if the factory reset doesn’t fix the touchscreen, the phone needs hardware repair. What should I tell the repair shop?
Technician avatar Technician
Perfect. Tell them exactly what you’ve found: “The right side of the screen doesn’t respond to touch. It happened after a drop about a month ago. Restarting and a factory reset didn’t fix it. The issue is consistent and affects all apps.”

That’s clear and professional. They’ll likely test the touch digitizer and controller, and if it’s damaged, they’ll replace the display assembly (which includes the touch sensor) or the controller board, depending on what they find.

A Samsung service center is usually more reliable than a third-party shop, but either way, get a quote and warranty on the repair before you agree to it.

Quick answer: the accepted fix

Accepted first fix for Samsung touchscreen not responding in some areas (safe approach): 1) restart the phone completely (power off, wait 30 seconds, power on) to rule out temporary software glitches, 2) test if the unresponsive area is consistent (same spot always) or random, and check if it affects all apps or just a few, 3) if the dead zone persists everywhere after restart, back up your data and try a factory reset to eliminate software calibration issues, and 4) if the touchscreen still doesn’t respond after a factory reset, the issue is almost certainly hardware (damaged touch digitizer or controller), and you’ll need professional repair or replacement. A Samsung service center or trusted repair shop can diagnose the exact problem with specialized equipment.

Why Samsung touchscreen develops dead zones (and why it often starts after a drop or impact)

A Samsung phone touchscreen unresponsive in certain areas usually happens because the touch digitizer (the sensor layer under the glass) or the touch controller chip has been damaged. This can occur from a drop, impact, liquid exposure, or simple age-related wear. Unlike a full screen failure, a partial dead zone means the display picture is fine, but the touch input in that area stops working. The phone is still usable, but that zone becomes inaccessible. Software issues like calibration problems or driver glitches can sometimes cause similar symptoms, which is why a restart and factory reset are important first steps — they rule out software causes before you assume it’s hardware damage.

What to check first (safe checks before considering repair or replacement)

Start with the simplest step: fully restart your Samsung phone (power off, wait 30 seconds, power on). Next, open different apps and test if the unresponsive area is always in the same spot or moves around. If it’s consistent, check the phone for visible cracks, water damage, or signs of physical stress. Feel the phone for unusual heat on that side. If restarting doesn’t help and the issue is consistent across all apps, back up your data and try a factory reset. If the dead zone persists after a factory reset, the touchscreen hardware is likely damaged and will need professional repair. For more mobile troubleshooting topics, see Troubleshooting Guides and Mobile Troubleshooting.

Samsung touchscreen dead zones explained — calm, senior-friendly guidance

Focus on whether it’s software or hardware before you decide on repair.

If your Samsung touchscreen stops responding in certain areas, don’t panic. A restart and factory reset are safe, reversible steps that can rule out software issues. If those don’t work and the dead zone is always in the same spot, it’s almost certainly a hardware problem — the touch digitizer or controller is damaged. That’s not your fault, and it’s repairable. A Samsung service center can diagnose it quickly with specialized equipment and give you a repair quote. In the meantime, you can still use the phone with the responsive areas.

Disclaimer: This information is AI-generated and intended for general guidance only. Do not attempt to disassemble your phone or use unapproved repair tools. For official diagnostics and repair, contact Samsung Support or an authorized service center.

If the issue continues

Getting Started Is Easy

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If your Samsung touchscreen has dead zones, start with the safest checks: restart, test consistency, and try a factory reset. These steps rule out software issues before you assume it’s hardware damage.

Expert will respond in minutes

Most touchscreen dead zones are caused by damage to the digitizer or touch controller, often from a drop or impact. A factory reset confirms whether it’s a software or hardware issue.

Stop guessing about repair needs

Once you’ve ruled out software issues with a factory reset, you’ll know exactly what to tell a repair technician. They can diagnose the touch hardware problem and give you a clear repair estimate.

FAQ

Is a dead touchscreen zone always hardware damage, or can software cause it?

Software issues like a corrupted touch driver or calibration problem can sometimes cause unresponsive areas, but they’re rare. A restart and factory reset will clear those out. If the dead zone persists after a factory reset, it’s almost certainly hardware damage — the touch digitizer or controller is not working. Hardware damage is more common, especially after a drop or impact.

I dropped my Samsung phone a month ago, and now the touchscreen has a dead spot. Is that the drop?

Very likely. Drops can damage the touch digitizer layer or the touch controller chip, but the damage sometimes takes days or weeks to show up. The impact may have stressed the component, and it finally failed. The good news is the display itself (the picture) is usually fine, so it’s not a full screen replacement in most cases — often just the digitizer or controller needs repair.

Can I clean the screen to fix an unresponsive area?

Cleaning might help if dirt or debris is blocking the sensor, but if the dead zone is consistent and doesn’t change with pressure or cleaning, it’s not a dirt problem. Gently wipe the screen with a soft, dry cloth first as a safe check, but don’t use liquids or harsh materials. If cleaning doesn’t help and the zone is still dead, the digitizer or controller is likely damaged and cleaning won’t fix it.

What does a Samsung service center do to fix a dead touchscreen zone?

A service center will test the touch digitizer and controller with specialized equipment to confirm which component is damaged. If it’s the digitizer, they’ll replace the display assembly (which includes the touch sensor). If it’s the controller chip, they may replace that component or the entire logic board, depending on the damage. They’ll give you a quote and warranty on the repair before they start.

Sources

Filed under: Performance & Slowness

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