When fanboys rushed to enthusiastically install the update, hoping for new innovations on their shiny devices they were surprised by a random “no service” feature which did not seem to do much good at all.
On Apple's support forum there are several threads from users complaining that iOS 14.7.1 broke their iPhones, causing a "no service" problem where users are unable to connect to cell service. There are similar threads on Apple's developer forums as well. Along with the usual fanboys insisting that they have no problems at all and the update worked fine for them.
While there doesn't seem to be a pattern to which phones are affected, the only thing they have in common is upgrading to iOS 14.7.1.
Users are saying that restarting the phone, removing the SIM, and even resetting network settings didn't help.
Forbes reports the bug appears to happen when you lose your cellular connection and switch to WiFi calling, so those living in areas with good reception may never see it. Of course, this scenario also helps to mask the scale of iPhones which might be affected."If you haven't upgraded to iOS 14.7.1 yet, this potentially crippling flaw could (understandably) put you off upgrading."
The upgrade contains a critical fix for a new zero-day security flaw which means if you don’t update you could be taken down. Still Apple fanboys will probably point out that if you can’t connect to your phone service you are safe from the zero day flaw too so Jobs' Mob tiggering your phone is doing you a favour.