Rest Finger to Open is an Accessibility setting that affects the Touch ID sensor on the iPhone in some way. While there is no definitive explanation for why and how it solves the iPhone's sensor difficulties, some users have found it to be a useful remedy. Here's how it works if you want to give it a shot on your own:
- Go to the Settings menu.
- Select General.
- Select Accessibility from the menu.
- Press and hold the Home Button.
- To use the functionality, tap the switch next to Rest Finger to Open.
After you've made these adjustments, reboot your iPhone and check to see whether Touch ID is working properly.
