I bought a LG-P769 off Ebay and when I got it, I had to cut down my sim card so that it would fit in the micro SIM slot. This went fine and I inserted it and the phone was working great. Then all of a sudden I went to use my phone one afternoon and it says that my sim does not allow a connection to this network. I even tried to reset and reboot the phone but nothing has worked. I have GoSmart mobile and I even went on their website to see how to program the APN but it still will not work. Can someone please please help me? I am so frustrated because I love this phone.