iPhone and SIM keep deactivating
iPhone 6 (iOS 10.2.0) has at random times, wiped itself and deactivated the SIM card. The first time it happened, user was in Argentina and so had to be sent an activated SIM to get service. Several months later, user was in the US and phone wiped itself and deactivated the SIM. (When going through the setup on the iPhone, was given message that the SIM could not be activated). 2nd user with the company has reported the same issue on his iPhone 6. Both phones are on Verizon. Has anyone else encountered this issue?
Turing the phone off or connecting to iTunes does not work to restore service on the SIM.
iPhone 6, iOS 10.2, Verizon