I'don't like new ios 7 i want to back to 6.1.3 for my iphone 4S Because Safari close when i check other app and when i'm back Safari reactive my page. Before my page is always active. It's same for many app are closing when i use others.
Sorry, but downgrading is not supported. I don't quite understand your issue, though, so perhaps if you can explain in more detail, someone can offer suggestions.
You cannot go back.
Basics troubleshooting from the manual is restart, reset, restore
Retrieving data ...