My text messages keep failing when I try to send them from my iPhone. The messages are green, and sometimes they actually go through but still show as “Not Delivered.” Other times, they show as “Not Delivered” and don’t go through at all. Some people gets them multiple times when I try to keep resending. I have cellular data turned on, but I’m still having the same issue. This has been happening for months. Do you know what could be causing this?
