The iPhone 7 Plus touch ID function doesn’t work, when we use touch ID to unlock iPhone, it has no response. This iPhone 7 Plus doesn’t get damage from the water or drop. So we suspected it’s caused by software problem. Here are some troubleshooting tips.
1. Clean and dry the iPhone home button
If the iPhone home button is covered by dust, clutter or liquid, then it also will prevent the iPhone from identifying your fingerprints, eventually the iPhone touch ID failed to work. Before you are using touch ID, please make sure the iPhone home button is clean and dry.
You can use Non Dust Cloth to clean up the iPhone home button, make it clean and dry.
2. Clean and dry your finger
If the finger is dusty, clutter, or liquid, it will prevent the iPhone from identifying your fingerprints, which can cause touch ID failure. When you touch the iPhone 7 Plus home button with your fingers, please make sure your finger is clean and dry, so it can make the touch ID work normally.
You can wipe your fingers with a clean cloth, make it clean and dry.
3. Re-add fingerprints
The problem with the fingerprint itself can also cause the failure of the iPhone touch ID. We can try to fix it by removing the old fingerprint and re-add the new fingerprint.
First, unlock iPhone by entering the password, and then Go to Settings > Touch ID & Passcode > Enter the passcode of your iPhone > Scroll down to find fingerprints. Tap on the fingerprint, which you want to delete and then Tap on Delete.
Go to “Settings” > “Touch ID & Passcode” > enter the passcode, now please tap “Add a Fingerprint”, press the “Home” button using the same finger that you want to get as a new fingerprint scanner. Wait for vibration and release the finger from the Home button. Make sure to press the Home button from every angle perfectly.
4. Reboot iPhone 7 Plus
If there are software errors, it may cause iPhone 7 Plus touch ID failure. For the many simple software errors, we can fix it by restarting.
In order to restart the iPhone 7 Plus, please press and hold the iPhone Power button until the Slide to Power Off command appears, drag the slider to the right to turn your iPhone off, and then press the iPhone power button again to turn on the iPhone 7 Plus.
5. Restore iPhone 7 Plus
If there are more seriously software errors, after restarting, the problem is still there, then we should try to fix it by restoring.
Connect the iPhone 7 Plus to the computer via iPhone lightning cable, open the iTunes on the computer, update iTunes to the latest version, and then use iTunes to restore the iPhone 7 Plus.
If none of the above troubleshooting works, then we should check iPhone hardware problem.
Please note that if you are not the professional repair man, then please send your iPhone to Apple Care or local iPhone repair shop.