PROBLEM: my iMessage is stuck in "Waiting for activation" mode. I have tried dozens of online troubleshooting tips, but nothing works. BACKGROUND: I have an iPhone 5c which I'm using in Africa for 6 months. I had Koodo unlock my phone so I could use a local SIM card, and am paying the monthly Koodo fee to suspend my account so I can keep my phone number. For the first three weeks in Africa, I have had no problem using iMessage and FaceTime with my family in Canada. However, I recently upgraded to iOS 10.2.1 and now neither works. When I go to Messages>iMessage>Send&Receive, my Koodo phone number is greyed out and the spinning icon just keeps spinning. I don’t know whether I should de-install iOS 10.2.1. Help?