why are some of my messages not getting delivered
Hi, all of a sudden when I reply to certain messages it says "message not delivered." With a red explanation point. how do I
fix that? I have already tried rebooting, adjusting settings etc.
Are you having issues with iMessage (blue bubble) or SMS (green bubble)?
See here for more help: If you can't send or receive messages on your iPhone, iPad, or iPod touch - Apple Support
And, if you're having issues with SMS, contact your carrier.
~Lyssa