The iOS 8.0.1 update is causing a lot of iPhone owners grief, particularly those who have a new iPhone 6 or iPhone 6 Plus, where it has apparently killed the cellular signal of those devices, leading to a persistent “No Service” problem. Additionally, Touch ID has stopped working on those devices. Obviously this is not good, and users who have not yet updated are advised to avoid the update until a fix has been released by Apple.
If you already updated to iOS 8.0.1 and are now experiencing the cellular connectivity failures and Touch ID issues, you have three choices: wait for an update from Apple which is sure to arrive as soon as possible, restore through iTunes, or downgrade to iOS 8. The latter two resolutions we’ll cover here.
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