Method 1: Activate Touch ID from Settings on iPhone.
This is the most direct fix to the matter that users cannot activate their touch ID.
Method 2: Reboot Your Device.
Force restart your iPhone maybe won’t get past the Apple logo but if something is stuck the simplest and yet good solution can be restarting your iPhone. Restarting your device also can be helpful in other minor problems.
How to reboot iPhone 6 and earlier models.
How to reboot iPhone 7 and 7 Plus.
How to reboot iPhone 8, 8 Plus, X, XS, XS Max, XR.
Method 3: Factory Restore Your iPhone.
How to Activate YouTube using Youtube.com/activateActivate Crunchyroll on Any Device using www.crunchyroll/activateHow to Activate an iPhone X, XS, XS Max, and XRFix: Windows Can’t Activate Try Again Later
