I do not know if this is a problem with Verizon or if it is a problem with AT&T but i can not send a message to a friend of mine on AT&T. It says the message has sent but he never receives it. I can call him and he can call me and ever my g/f who is on verizon can message him and he can get it and reply back. I get his messages he sends me but he never gets them from me. We have both deleted the contacts and put them back in and rebooted the phones and deleted the conversations. Still same issue. He never gets the message and it started about 5 days ago. At first we didn't know it was happening till he asked why i never answered him. Would like to know if this is a Verizon or an AT&T issue.