Is your phone switched on, but part of the screen refuses to respond when you tap it? Maybe you cannot type certain letters, press buttons near the edge, or swipe across the entire display.
When you experience mobile touch not working but phone is on, the problem could be a software glitch, a screen protector, moisture or physical damage to the touchscreen digitizer.
The good news is that you can perform several checks before paying for a screen replacement. This guide explains how to fix a dead spot on phone screen, how to identify possible hardware damage, and when professional repair is the sensible option.
Why Is There a Dead Spot on My Phone Screen?
A dead spot is an area where your phone fails to register touch properly. It may affect a small section, a vertical strip or a larger portion of the display.
Common causes include:
Damaged digitizer: A drop or impact may damage the touch-sensitive layer, even if the glass looks intact.
Faulty screen protector: A poorly fitted or damaged protector can interfere with touch response.
Software problems: A frozen application or temporary operating-system issue may make touch appear broken.
Moisture: Water on the screen or liquid damage inside the phone can affect touchscreen operation.
Charging interference: A faulty charger or cable may contribute to erratic touch response while charging.
Identifying the cause matters because a software problem does not require a new screen, while a physically damaged digitizer may need professional repair.
How to Fix Dead Spot on Phone Screen: Start With This Test
Before buying replacement parts, check whether the same area consistently fails to register touch.
On an Android phone, try this simple test:
Open your home screen or another suitable screen.
Touch the top-left corner of the display.
Slowly drag your finger diagonally toward the bottom-right corner without lifting it.
Repeat the test if the gesture stops.
Observe whether it repeatedly breaks at the same physical location.
You can also open a drawing application and draw slow horizontal and vertical lines across the screen. Gaps may help reveal areas that are not registering touch.
Google's Android troubleshooting guidance recommends a similar diagonal drag test to help identify touchscreen problems.
Important: A failed test is evidence of a touch-response problem, not definitive proof that the digitizer is damaged.
Mobile Touch Not Working but Phone Is On? Try These Fixes
Remove the Screen Protector and Case
If your mobile touch is not working but the phone is on, inspect the screen protector first.
Look for cracks, lifted edges, bubbles or trapped debris. Remove the case and, if necessary, carefully remove the screen protector. Clean the display with a soft, lint-free cloth and test it with dry fingers.
If the problem disappears, replace the protector with one compatible with your phone.
Restart Your Phone
A temporary software glitch can interfere with touch input.
Restart your phone using its normal restart procedure. If the touchscreen is completely unresponsive, follow the manufacturer's instructions for a force restart for your exact model.
If touch works normally after restarting, monitor the phone to see whether the problem returns.
Check Whether One App Is Causing the Problem
Does the dead spot appear only in a particular application?
Test the same area on the home screen and in another application. If the problem is limited to one app, update it and restart the phone.
On Android, you can also test in Safe mode using your manufacturer's instructions. If the issue disappears in Safe mode, a downloaded application may be involved.
Avoid performing a factory reset as your first troubleshooting step. It deletes personal data and cannot repair a physically damaged digitizer.
Disconnect the Charger
If the screen behaves strangely only while charging, disconnect the charger and test it again.
Try a reputable compatible charger and cable if the issue disappears. If touch remains unreliable when the phone is disconnected, investigate other causes.
How to Fix Dead Zone on Touch Screen Android
Android phones from different manufacturers have different settings, so the exact solution depends on your model.
On supported Samsung Galaxy phones, check Settings → Display → Touch sensitivity if you use a screen protector and the option is available.
For other Android devices, follow these steps:
Restart the phone.
Clean the screen and remove the protector temporarily.
Update the operating system and affected applications.
Test the screen in Safe mode where supported.
Repeat the diagonal drag test to identify persistent dead zones.
If the same section repeatedly fails after these checks, especially following a drop, the display assembly or digitizer may need professional inspection.
Do not assume every Android phone has the same touch-sensitivity setting. Some models do not provide one.
How to Fix an Unresponsive Touch Screen After Water Damage
If your touchscreen stopped working after the phone got wet, do not treat it like an ordinary software problem.
Water can interfere with touch response on the surface, but liquid entering the device can also damage internal components.
Take these precautions:
Disconnect the charger and other accessories.
If the phone is wet, power it off if you can do so safely.
Dry the exterior gently with a soft cloth.
Follow the manufacturer's liquid-exposure guidance.
Seek professional service if the screen remains unresponsive or the device may have suffered internal liquid damage.
Do not charge a wet phone, apply heat with a hairdryer, or insert objects into its ports. Avoid relying on rice as a repair method.
If the device becomes unusually hot, swells or shows signs of electrical damage, stop using it and seek qualified assistance.
Read also: How to safely clean your phones charging port
When Does a Dead Phone Screen Need Replacement?
A hardware fault becomes more likely when:
The same section repeatedly fails the touch test.
The problem began after a drop or impact.
The screen is cracked or visibly damaged.
Touch remains unreliable across multiple applications.
Restarting and removing the screen protector make no difference.
The phone has experienced liquid damage.
A repair technician can determine whether the problem involves the digitizer, display assembly, internal connections or another component.
Some phones combine the display and digitizer into one replacement assembly. Therefore, the correct replacement depends on your exact phone model.
If professional diagnosis confirms a damaged digitizer or display, a replacement assembly may be necessary.
Choose a screen specifically matched to your phone's exact model number. Similar-looking phones may use different connectors, displays and components.
Final Verdict
If you are searching for how to fix dead spot on phone screen, begin with the simple checks: remove the screen protector, clean the display, restart the device and test for a consistent dead zone.
If mobile touch is not working but the phone is on, the cause could be software, an accessory or a hardware fault. A persistent dead zone, particularly after a drop or water exposure, deserves professional inspection.
Diagnose the problem before buying a replacement screen. The right repair depends on the actual fault and your exact phone model.