I have an iPhone XS max and had the iPhone X before this and have been having difficulties in having text messages go through to non apple numbers. This happens randomly, but is very annoying. Called Verizon about it and they suggested taking all other emails of my Apple ID(that's being used by the phone to send messages) except one, which I did about 6 months ago. The problem seemed to go away but has been resurfacing where the messages to non apple numbers fails to send. One of the fixes I use is to call a non apple number and then the text messages go through again. This also has no reached its limits in its effectiveness. Any suggestions would be appreciated.