I am using an unlocked Cliq on AT&T network. All my data works fine, but I'm having trouble with text messages. Normal texts come and go fine it seems, but I'm unable to send picture messages. I assume I'm also unable to receive picture messages, though I haven't specifically tested that. The bigger problem is a random text I keep getting. It comes from 11-216-116-11, and always says the same thing, "error invalid number please re-send using a valid 10 digit mobile number or valid short code." They always come in threes, and I always get them when I reboot the phone or sometimes they come randomly. Can anybody help with these issues?