I made the mistake of "upgrading" the Galaxy I was very happy with to an iPhone 5. Essentially, I purchased a CAMERA. I have followed the troubleshooting tips on both this site and Apple's a gazillion times and it has never made any difference. On one of my countless visits to the Koodo store, a Customer Service representative was kind enough to change the SIM card. Again, no difference. Koodo says the phone must faulty, Apple claims it is a carrier issue. My Wi-Fi does not work at home, either, but that is due to Shaw's abysmal service. Can anyone give me any advice whatsoever, please?