This has been happening for years across different phones, but always on Verizon. Is it possible that I'm on a bad server or something? I don't know of anyone that has had so many problems with it and I use Verizon Messenger (but same issues with native SMS apps).
Again, this has happened on blackberry, motorola, and samsung (across OS's).
I don't want to do a bunch of changes to my phone, since it has happened on all of my phones. It seems to either be a server-side issue or just really unreliable service from Verizon.
I guess that's possible, but this happens in many areas (where I have strong signal) and it happens after manyworking texts ... then it stops sending. Then it sends again ... etc.
If it is everywhere, all the time, and across all phones you might have a network issue in that the coverage is the only thing I can think of as all other factors have been ruled out.