On Thursday evening, a lot of iPhone owners (including some here at The Verge) are seeing the “not delivered” flag when trying to send texts via iMessage. Apple’s system status page hasn’t noted any issues as of 6:30PM ET, but reports across social media show something is going on. People have reported the problem across multiple wireless carriers (Verizon, AT&T, and T-Mobile), countries, and even continents.
If you are having issues getting texts out, then attempting to resend them…
