I can't register my Touch ID

Hello ikotun,

Welcome to the Apple Support Community! We understand your Touch ID is not setting up properly. We're happy to help! We'd begin by taking a look at the reference below:

If Touch ID isn't working on your iPhone or iPad

If you continue to have problems let us know!

Thanks.

Hello ikotun,

We understand you are still having issues getting your Touch ID working. Per the article above, we'd recommend reaching out to Apple Support directly:

"If the previous steps didn't help, you see "Failed—unable to complete Touch ID setup", or either of the following happen when you go to Settings > Touch ID & Passcode, take your device to an Apple Retail Store or Apple Authorized Service Provider, or contact Apple Support:

• You can't turn on Touch ID
• Touch ID is dimmed or grayed out"

Have a great day!