My friend has an iPhone 7 and when he is in a text message group of 3 he consistently cannot get texts from one specific person. If that person sends him a text directly, he gets it. If he is in a group of 4, it works fine too. He had this problem with his iPhone 6. I suggested he try to shut off iMessage and factory reset if that doesn't work. He shut off iMessage and still has the problem. He just got an iPhone 7 (set up as new). Still has the problem. iPhone is on Verizon. Android phone is on T-Mobile I think. What do we do?!?!?