Helloooooooo p-rod!
I pray daily that you receive no more SIM CARD errors. I still believe I created some kind of negative voodoo mojo curse by my joyfilled, frollicking, playful, joking post of a few days ago. Let's just say..my joking days are over.
I did the experiment and for fun pass on the data:
I used THREE iPhone 4S's in the experiment.
Two were connected to their AC adaptors. The MacBook Pros they are synced to were on (sleeping) with iTunes active so that the iCloud evening backup could take place. Result...When I disconnected the 30 pin AC adaptor from both of these phones in the morning, wifi and 3g were on IMMEDIATELY. No delay.
One iPhone 4S was connected to its AC adaptor, but the MacBook Pro it is synced to was shut down so no iCloud backup took place. Result...Identical to the other two. Wifi and 3g were active immediately on disconnecting the power cord.
So, that removes the idea that an iCould backup at night could be the cause of your recent SIM onslaught.
The question then remained...under what circumstances did I see that delay in wifi and 3g access? I was haunted by the vacuum that was my memory. Then I thought...perhaps this occurred AFTER completely shutting down my iPhone. (Holding the on/off button until the "Shut Down" slider bar appeared at the top of the screen.) So I tried that. Sure enough, that was it. When you do a complete shut down (not just let the phone sleep), when starting the phone back up there is a delay in wifi and 3g connection. In fact, your phone won't connect to your wifi network until you enter your password lock code. Nice to know, but I don't think you saw the SIM error when starting back up from a full shut down. So, no help there either.
As Thomas Edison said, no experiment is a failure as you learn what doesn't work at the very least (extreme paraphrasing). That's what happened here.
I will pass on one thing I am sure you already know. But, it did contribute to SIM errors on my daughter's phone many months ago. Some people never do a full shut down of their phones. They just put them to sleep. Apple's evening iCloud backup procedure contributes to this as you can't shut the phone down and have it do an evening backup. My daughter had not shut down her phone for over a month when her first SIM error occurred. I then, in true teacher fashion, lectured her as to the necessity of doing a full shut down AT LEAST several times a week as doing a full shut down gets rid of a lot of potentially nasty things that have accumulated in your phone. (It is somewhat similar to taking the battery out of a malfunctioning phone to return it to proper functioning. Or, unplugging certain tech equipment...waiting a minute or two...and replugging it in. Or, making sure to do a full shut down of your computer fairly regularly.) She said, "Yes, Daddy Dearest...will do." So, she then proceeded to go another 3 weeks without completely shutting down her phone...result...her second SIM attack.
So, just on the outside chance you never, or very rarely, fully shut down your phone that may explain that one time SIM experience the other day.
BTW...when you said "Flummoxed in Massachusetts......" my heart sank. Visions of a fanatic Red Sox fan danced in my head and made me want to pass out. I actually grew up in NY and am a "to the death" NY Yankee fan. I hope that does not become a problem for us. 😁
Mr. Luigi