Just a quick note. Apple released an OTA update for 8.0.1 a while back. There are reports that it kills the cellular service and Touch ID. Might not be a very wise idea to update on the 5s or better, since most reports list both services as dead, I assume this applies to 5s and better that have a Touch ID. It seems to be okay with the cellular service on my 5, so, it’s probably related to the Touch ID.