I have a Droid mini. In the past month or so I have periodically found out from a friend that a text I sent was not received. This has happened with multiple contacts, they are using different service providers (one on Sprint, one on Google Voice, etc). My phone shows the message was sent. If I log into My Verizon, my message log shows the message having been sent. But that person never got it. The most recent time, I sent two messages within a short time and they only received the second one.
How can we find out the source of the problem and fix it? Since the message shows up in My Verizon, it appears that it gets sent correctly from my phone to your network... is there anything I can do on my end?