Thankfully there maybe a fix for these issues in iOS 8.0.2 and it can be done by simply following these steps.
if you’re facing the Wi-Fi and cellular connectivity issues, then you may want to try resetting Network settings(Settings > General > Reset > Reset Network Settings) to see if it helps.
If you’re having Touch ID issues, then you can try deleting the fingerprint and configuring it again to see if it helps (Settings > Touch ID & Passcode > Finger > Delete Fingerprint, and set up the finger again).