I have an iPhone 5c, I have had the phone on my prepaid account for over a year. Yesterday I noticed that I could not send text messages, or make phone calls. And I noticed that on my upper left screen where it usually shows Koodo it says Searching... instead. I have tried to take my SIM card out and restart my phone, it didn't work, I have looked in my setting but cannot find anything that has changed. Any tips?