Originally Posted by Dr Jones
I'm on Sprint and used to get this error once or twice a week. Very annoying as you couldn't just swipe it out of notifications.
I did some searching and found this solution:
No SIM Card Error on HTC One
Kind of a shoddy way to fix the issue... but it worked. Did this about a month ago and haven't seen the error since. Guessing it did just want it said it would do... raised the SIM Card contacts just enough.
Great link there. One of those simple, "why didn't I think of that" ideas. Sometimes those are the best solutions even if they are somewhat makeshift.
Adding link to my 'tools and references' bookmarks, and will be remembered next time I run across someone with the similar problem