As tiltle says my new Nexus 7 3g will not connect to 3 network,I have a good signal 4 bars ,but nothing.On WiFi it's great,but dead on 3g nothing, am I missing something ?.Don't know much ,but the basics so be easy on me!. I even took it to the shop that supplied the mico sim and they couldn't do anything with it, the tablet knows the card is there and the 3 symblom is displayed at the bottom of the screen!!.Any ideas before I send it back???Cheers Andy