Group iMessage changed from blue to green - individual message to same people is blue
I have had a group text with 4 people for several months. They were in iMessage and were blue. Suddenly at the beginning of August they turned green. If I text each of the individuals directly the messages are still blue. The problem is with the group text to the same people - why is it green when it’s to the group but blue to the same people individually????
iPhone 6s, iOS 11