The Taptic Engine is Apple's haptic feedback mechanism within their devices. A combination of "tap" and "haptic feedback," the "Taptic Engine" is a name that Apple created for its technology that provides tactile sensations in the form of vibrations to the user.
At times, the Taptic Engine can fail, causing haptic feedback to not take place as it should be. This guide is aimed at helping you resolve issues with this system.
The Taptic Engine is only present within the iPhone 6S and newer devices.
2. Restart
To restart your device:
Restart your iPhone X
Press and hold the Side button and either volume button until the slider appears.
Drag the slider to turn your iPhone X completely off.
After your iPhone X turns off, press and hold the Side button again until you see the Apple logo.
Restart your iPhone 8 or earlier, iPad, or iPod touch
Press and hold the Top (or Side) button until the slider appears.
Drag the slider to turn your device completely off.
After the device turns off, press and hold the Top (or Side) button again until you see the Apple logo.
With iOS 11 or later, you can also turn off your device by going to Settings, then General, then Shut Down.
3. Enable Haptic Feedback
Select Settings.
Select Sound and Haptics.
Switch the System Haptics toggle on.
4. Reset Your Settings
The following steps will reset your iOS preferences to defaults. Your applications and data will not be removed.
Select Settings.
Select General.
Select Reset.
Select Reset All Settings.
Enter your iPhone's passcode (if prompted), and on the following confirmation screen, select Reset All Settings.
5. Update
To check and see if updates are available for your iOS device:
Select Settings.
Select General.
Select Software Update.
Your iOS device will perform a search for available iOS updates.
If no update is available, it will display your current version of iOS and inform you that your software is up to date.
If an update is available, it will be displayed.
Select Download and Install to begin the update process.
If prompted, enter your passcode to proceed.
6. Factory Reset
Select Settings.
Select General.
Select Reset.
Select Erase All Content and Settings, and enter your iPhone's passcode (if prompted).
You will receive a confirmation prompt offering to Backup Then Erase or Erase Now. If you would like to back up your device's information before erasing, select Backup Then Erase. Otherwise, select Erase Now.
Your iPhone will now wipe all data and reset back to factory defaults. When completed, you will be presented with the Welcome screen you saw when you took your iPhone out of the box for the first time.