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Initial Steps:
1. Force Restart: Sometimes a simple restart can fix minor software glitches.2. Clean Screen and Hands: Ensure the screen and your hands are clean and dry, as dirt or substances can disrupt touch functionality.
3. Remove Screen Protectors and Cases: These accessories might interfere with the screen's responsiveness.
4. Disconnect Peripherals: Unplug any connected peripherals like chargers as they could impact the touch screen.
Possible Causes:
1. Software Bugs:
Sometimes, software glitches can make the touch screen unresponsive or erratic. Here are some steps to troubleshoot software-related issues:- Test touch functionality on the home screen. If it works fine, try closing the last app you used from the App Switcher and reopen it. Check for updates for the affected app in the App Store and install them.
If the issue persists, consider uninstalling and reinstalling the app. If the home screen is also unresponsive, it may be a hardware issue. - To rule out software entirely, make sure you have a current backup and restore your iPhone using recovery mode. This will erase all data on your phone, so proceed with caution.
Related Article: Fix iPhone X Stuck in Recovery Mode - Software Fault
2. Display issues:
Sometimes, the touch screen may not work properly due to internal display problems. Here are some steps to troubleshoot display-related issues:
- Inspect the display for any signs of damage, such as cracks. Change your viewing angle to catch small hairline cracks. Even a small shift in an existing crack can affect touch functionality.
- Test different parts of the touch screen to see if they respond. Try using landscape mode to navigate inaccessible areas of the display. You can also use touchscreen test apps to identify dead spots.
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Check the internal cables for tears or damage. Identify the cables related to screen function. If you recently replaced the screen, the new display may be faulty.
3. Logic board issues:
The logic board is responsible for the majority of an iPhone's functionality. If none of the above steps have resolved the touch screen issue, it's possible that a component on the logic board has failed or become damaged. Here are some steps to troubleshoot logic board issues:
- Check for obvious signs of board damage, such as burned or cracked components, liquid residue, corrosion, or bends. If there are signs of liquid damage, refer to the iPhone Liquid Damage Guide for further assistance.
- In some cases, separation between the top and bottom boards can occur due to bends or heavy drops, which can affect touch functionality. Replacing the logic board may be the most practical solution, but it requires specialized tools and expertise.
Seeking tools from a professional phone repair tools shop that specializes in supplying tools to replace logic board.
iPhone 15 Touch Screen Troubleshooting FAQs
1. Why did my iPhone 15 touch screen suddenly stop working?Possible reasons could include software glitches, exposure to moisture, physical damage like cracks, debris lodged in the screen, or issues with digitizer cable connections.
2. How can I make my iPhone 15 touch screen work again?
Try force restarting your device, updating the operating system, removing any screen protectors, cleaning the screen, or seeking professional repair if there are hardware component issues.
3. What should I do if I can't unlock my iPhone 15 due to touch screen problems?
The touch screen is crucial for entering passcodes. Consider getting it repaired or using alternative input methods to unlock your device.
4. If restarting and resetting didn't resolve my iPhone 15 touch screen issue, what should I do?
If software troubleshooting doesn't work, there may be a hardware problem. Check for physical damage, debris, inspect ribbon cable connections, or consider replacing the screen digitizer.
5. Can I still use my iPhone 15 with a malfunctioning touch screen?
Yes, you have options! You can connect a Bluetooth keyboard or mouse, enable Voice Over control, attach a capacitive stylus to the headphone jack, or use Assistive Touch pointer to interact with the interface.
