Fix Unable To Activate Touch ID on This Phone

By MiniCreo, on Sep. 03, 2018, to iOS 12 Problems |


Symptom: After updating to iOS 12, my Touch ID is no longer working on my iPhone 6s (but iPhone 7 plus is fine). I did a lot of troubleshooting works suggested on Apple.com and many other iPhone How-To sites but in vail. No matter I hard restart my iPhone 6s or Restore from iTunes, I keeps getting an error message saying "unable to activate touch id on this phone". Is there anyone have the same iPhone/iOS 12 update problem?

Diagnosis: Touch ID is a fingerprint recognition feature designed by Apple. It allows users to unlock iPhones (iPhone 5s or later models), make purchases in the various Apple digital media stores (the iTunes Store, the App Store, and the iBooks Store), and authenticate Apple Pay online or in apps.

If you have run into this unable to activate Touch ID issue on your iPhone or similar iOS 12 update problems, you're in the right place. Follow our best-recommended iPhone troubleshooting tips below to learn how to fix this "unable to activate touch id on this phone" error message.

Table Of Content:

General Unable To Activate Touch ID Fixes

Apple's Touch ID is based on complicated technologies which are quite fragile comparing with other iPhone components. So if you can't unlock your iOS device using Touch ID, or you have other kind of unable to activate touch id on this phone error, follow these steps to find a quick fix:

  • Make sure that you have the latest version of iOS (Learn How To Update To iOS 12).
  • Make sure that your fingers and the Home button on your iPhone are clean, dry and feasible.
  • Make sure your finger covered the entire Home button when you try to activate it, touching the surrounding metal ring. While Touch ID is scanning, don't tap too quickly or move your finger around.
  • If you're using a case or screen protector, you may have bigger chance to see this "unable to activate touch id on this phone" error message.
  • Make sure your finger covered the entire Home button when you try to activate it, touching the surrounding metal ring. While Touch ID is scanning, don't tap too quickly or move your finger around.

Check your Touch ID Settings

After updating your iPhone to iOS 12, it has chance that the Touch ID settings get modified. So that first and simplest tip to resolve this "unable to activate touch id on this phone" error is to check your Touch ID settings. To check your Touch ID settings, Go to Settings > Touch ID & Passcode to manage these settings:

How To Fix Unable Activate Touch ID Error
How To Fix Unable Activate Touch ID Error
  • Turn Touch ID on or off for Passcode, iTunes & App Store, or Apple Pay.
  • Enroll up to five fingerprints. Each new print might make fingerprint recognition take slightly longer.
  • Swipe to delete a fingerprint.
  • Identify a fingerprint in the list by touching the Home button. The matching print in the list will be highlighted briefly.

Hard Restart Your iPhone

Every new iOS update may cause a variety of iPhone glitches. And a general iPhone Fix tip on this unable to activate Touch ID issue is to hard restart your iPhone. The reason it usually works is that to restart your iPhone, it will complete iOS updates and give your iPhone a fresh start. Follow these steps to hard restart your iPhone: Press and quickly release the Volume Up button. Press and quickly release the Volume Down button. Then, press and hold the Side button until you see the Apple logo.

How To Fix Unable Activate Touch ID Error
How To Fix Unable Activate Touch ID Error

Factory Restore Your iPhone (without iTunes)

If none of suggestions above works for you, then you should consider perform factory reset/restore your iPhone to fix this "unable to activate touch id on this phone error". Follow this step-by-step tutorial to learn how to hard reset an iPhone.


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Requirements: OS X 10.8+ , 33.1Mb free space
Version 1.1.0 (26 July, 2018) / Support iOS 4 - iOS 11.4.1
Category: iPhone Fix

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