Instead of waiting for Apple to release a fix, iMore suggests downgrading back to iOS 8.

Go to

About

and then

Check for Updates

or visit

iTunes.com

.

Launch

iTunes

on your Mac or PC.

Connect your iPhone 6 or iPhone 6 Plus to iTunes via Lightning to USB cable.

Let iTunes do its thing

That’s it.

It’ll take a little while for your phone to restore, but it should be working after that.

iOS 8.0.1 kill the Touch ID and cell service on your iPhone 6 or iPhone 6 plus?

Here’s how to fix it!| iMore