After the problem related to Wi-Fi network connectivity, It seems that iOS 6 has a new problem that is now related to Apple's App Store. Some users have encountered the error Cannot connect to the App Store after they tried to use the App Store application by switching to it from the Passbook one. On the Apple discussion forums there are thousands of people who complain about the existence of the problem, but it does exist a solution very simple that will restore the functionality of the App Store application.
All you have to do is go in Settings > General > Date and Time > Set Automatically and choose the Off option, set the date one year before, then try to access the App Store again, press OK to the error message that will be displayed again, then return to the same iOS menu and set the previous option to ON . This method solved the problem for many users and if you encounter the error, no matter what version of iOS you have installed in the terminal, you can use the trick.
