For about a month now I've had an issue with my sms messages. I use to get something saying it had been delivered (little green circle), but all of a sudden it started saying "Unsuccessful" with every text. I called Verizon, and they had me do a factory reset on the phone, and that didn't fix it. The messages are going through, just not showing on my end that it was sent, because the people I'm sending them to reply, it's just annoying to never really know for sure if they are going through or not. (Every now and then I don't get a response, and they say they didn't get it). Now, the other strange thing about this, is that when I text one of the 4 lines on our contract it goes through fine, and shows that it was received. So I'm a little confused as to what's going on here. At first Verizon thought maybe it was the person's phone that I was sending the texts to (Also Verizon customer) but I've had it happen with several other people that also have Verizon, so I know it can't be his phone. No matter what app I use, either the one built into the phone, or Handcent, this happens. Is there a way to fix this, or is it just my phone? The phone wasn't dropped or anything. One day it worked fine, the next this issue started.