Q: "Invalid Sim" - Apple has, at last, ackowledged the problem
Seems like Apple has acknowledged that there's in fact a problem (http://support.apple.com/kb/TS4148) and released a new build to fix it:http://www.macrumors.com/2011/12/16/new-ios-5-0-1-build-9a406-intended-to-fix-no -sim-card-errors-on-iphone-4s/
I'm already trying it!
It seems that the feedback is a bit mixed...some say that it fixes the problem, some say that it stays the same...worht the try!
Here's the direct link for the build: http://appldnld.apple.com/iPhone4//0...6_Restore.ipsw
If you have a PC with Windows OS, just go to iTunes, press "Shift" + Restore, select the downloaded file and restore yout phone.
If you would like to keep your settings, do a backup prior to this because,, if you don't, you'll loose all your data. I choosed to not do that, and perform a "clean" install.
No problems so far, but then again, I'm getting this issue when I leave the phone in the Gym's locker (very poor signal).
So, I'll only be sure that it's fixed by Monday/Thursday...
iPhone 4S, iOS 5.0.1
Posted on Dec 17, 2011 7:06 AM