I have an LG Prime Go Phone and when i turn my phone on it says PUK blocked. I can only make emergency calls. How do I unblock it? I have not tried 10 times, but it wont let me get back to the unlocking dialpad. If I have to buy a new sim card will everything be lost, like my pictures, contacts, video, ect.? Also, if I took it to an AT&T store, could they unlock it? Thanks.