iMessage needs activation every time I restart my iPhone 6s! I am on iOS 10.0.2 and I also had this problem in my older iPhone 5s! Will changing the Carrier or the simcard solve this issue?
IIts really annoying BC my carrier charges me every time because iMessage sends an international SMS for activation and this happens once a day because my battery goes off and this thing happens again when I turn on!
iPhone 6s, iOS 10.0.2