Here's what you need to fix it. Tinfoil, Super glue and a metal hanger. Now fold the Tinfoil in to a shape of a pirate hat. Glue the edges so it holds together and than stick the hanger into the top of the hate. Put it on your head. Clime a tree and Yell "I'M A LITTLE TEAPOT!!" 3 times. To be serious it sounds like you might be in a bad area. You can always revert back to stock using the unbrick. Also if you fooled around with CM10 that will mess with the 4g. you'll have to reflash CM10 and change the settings.