I've begun to notice over the past couple of days that I'll send a text to certain people and get no response. I asked one of the people I know hasn't responded today, and he said he's never received any of my texts. So here's what's going on with my phone: 1. I use HandCent for texting. 2. None of the numbers affected have a 1 or +1 in front of the number. 3. This is happening to both people on VZW or off it (ATT, Sprint, other). 4. The phone is relatively new, I got it at the end of August 2010 after my previous one suffered a sudden dead screen. I mostly talk through texts, so this is kind of an issue to me. I was thinking of resetting the preferences in HandCent and seeing it that could help? And other ideas would be great, thank you!