Apple just rolled out iOS 8.0.1 to address several bugs in iOS 8, which shipped on the iPhone 6 Plus and iPhone 6 and is available for older devices dating back to the iPhone 4s. Unfortunately, it also created a major bug, which means you definitely shouldn’t update right now, particularly if you have an iPhone 5s, iPhone 6 or iPhone 6 Plus.
We can confirm after installing the update that iOS 8.0.1 breaks Touch ID. When we went to log-in to our device using a thumbprint the system didn’t recognize anything and we ultimately had to type in our passcode. A simple flaw? No. We then went into the Touch ID settings, deleted our fingerprint and tried to register a new one. That’s when the system just delivers failed messages over and over, without allowing us to even attempt to fix it.
We’ve also tried complete reboots to try to see if that fixed the problem to no avail. Reports online are suggesting that there are also wireless connectivity issues with mobile networks, which we are unable to confirm at this time. Stay away from iOS 8.0.1 for now, it’s probably safe to do so even if your phone doesn’t support Touch ID, since it appears there’s more than one issue here right now.
Update: Apple has since pulled iOS 8.0.1. You can fix the issue by reverting to iOS 8. We’ll let you know when a new version is released.