If your touch screen is not responding, immediately force a hard restart by holding the Power and Volume Down buttons for 15 seconds. If the screen remains unresponsive after the reboot, you have a physical hardware failure in the digitizer layer beneath the glass, which will require a professional screen replacement.
1. Is It Software or Hardware?
A frozen screen is usually caused by an overloaded processor or a crashed app (a software issue), while “dead zones” where only certain parts of the screen work indicate a broken digitizer (a hardware issue).
To find out exactly what you are dealing with, force a hard restart. This physically cuts the power from the battery to the motherboard, bypassing the frozen software.
- On iPhone (8 and newer): Press and quickly release Volume Up, then Volume Down. Then, press and hold the Side button until you see the Apple logo.
- On Android (Samsung, Pixel, Motorola): Press and hold the Power and Volume Down buttons simultaneously for 15–20 seconds.
2. Map Your Dead Zones (The Digitizer Test)
If your phone restarted successfully but is still ignoring your taps, or if only the top half of the screen works, your digitizer grid is broken. The digitizer is a transparent, touch-sensitive layer glued directly underneath your glass screen.
You can map out exactly where the screen is failing by using our free Touch Screen Test Tool. By dragging your finger across the test canvas, you will visually see exactly where the hardware grid is broken. If the line breaks repeatedly in the same spot, you absolutely need a screen replacement.
3. Remove Your Screen Protector and Case
It sounds obvious, but thick tempered glass protectors can lose their capacitive conductivity over time, especially if the adhesive layer begins to bubble or separate from the phone’s actual glass. Similarly, tight-fitting cases can pinch the extreme edges of the display, tricking the phone into thinking you are constantly pressing the bezel.
- The Fix: Peel off your screen protector, remove the case, thoroughly wipe the glass with a microfiber cloth, and test the screen again.
4. Check for Battery Swelling
Look at your phone from a side profile. Is the screen bulging upward, even slightly? A degrading lithium-ion battery will expand like a balloon. As it inflates inside the chassis, it pushes upward against the delicate flex cables connecting your screen to the motherboard, causing intermittent touch failures.
Warning: If your phone is bulging, turn it off immediately. Do not attempt to charge it. Bring it to a professional repair shop to have the battery safely removed, as swollen batteries are a severe fire hazard.
Final Thoughts
If you’ve completed a hard reboot and removed your screen protector, but our Touch Screen Test Tool still shows dead zones, your troubleshooting journey ends here. You will need to take the phone to a repair shop. Expect to pay between $100 and $300 for an OEM screen replacement, depending on the model.