iOS 8.0.1 update broke cellular connection

Just updated to iOS 8.0.1 on my iPhone 6 (Verizon). The update seems to have broken my connection to cellular service; the phone now shows "no service" and can't place or receive calls. Rebooting the phone doesn't seem to have fixed the problem. Anyone else?

If this problem was caused by the update, I don't understand how Apple could let the update ship in this condition, without adequate testing: breaking customers' cell service was plainly a much bigger bug than any the update was intended to address!