I was using an aluminum bumper case and my GPS turned to crap. Nothing else seemed to be affected but the GPS was definitely worse. I can literally take the case off get an instant lock. Put the case back on and it says searching for location.
XDA Developers was founded by developers, for developers. It is now a valuable resource for people who want to make the most of their mobile devices, from customizing the look and feel to adding new functionality. Are you a developer?