Okay, so my best friend and I have been having this issue for WAY too long. I've gone through three phones from Verizon and this STILL happens on every single one and she's gotten two new phones.
On and off for long periods of time, I won't receive any messages she sent me and vice versa. Every so often, something will come through, but otherwise, NOTHING. The problem fixes itself for a little while, then it just stops all together again. Now I don't even think she's getting my phone calls and I'm probably not getting any of hers either. This ONLY happens with her. All my other friends have no problem getting my texts and it's the same way with her.
We have tried EVERYTHING. For a while, it only worked if I sent media messages. Then it only worked if I forwarded a message. Sometimes the time stamps get messed up and it will say it sent, but the time keeps changing on it every time I go to check. Other times, the time stamp will say the message was definitely sent at a specific time, but neither of us have gotten the message.
This is getting ridiculous. Please help.