After a few months of trouble free use, my S3 is giving me 'No SIM Card' errors and forcing a restart. This is happening up to a dozen times a day. Very frustrating. The phone is unrooted. I've just tried a factory reset and still got the same error. The only solutions I've found online involve rooting the phone. Doing a quick search shows that this is happening to others as well. I have to drive a ways to the nearest Koodo Kiosk so I won't be able to do that until the weekend. Does anyone have any ideas?