With the release of iOS 6, Apple implemented a feature called remote debugging
A client is having problems with my webapp since installing the new iOS 6 and I can\'t
Additionally, if you're BrowserSync (which u should, btw), you can use it's remote debugging feature which is accessible from the UI. It should work with Safari mobile.
There's a topic about this already: How to do remote debugging with Browser-sync?
This cool feature is powered by Weinre. Not the most pleasant debugger. But it works quite well.
The only solution I see currently is Telerik "AppBuilder". However it's very expensive...
How to debug Safari iOS when you're on Windows?
Those nice Safari developer tools for iPhone require Safari 6, i.e. they are NOT available on Windows. There are no plans for a Windows version of Safari 6 or, as Apple put it: "Safari 6 is available for Mountain Lion and Lion. Safari 5 continues to be available for Windows." (http://en.wikipedia.org/wiki/Safari_%28web_browser%29#Safari_6)
If your local web server (e.g.: XAMPP) is properly configured, you should be able to visit it from your iPhone once it's connected to your computer. However, on Windows, this does not work either.
Alternatives:
Hope this helps someone.
Port forwarding on ios device is easy. but the problem is, that ios does not run inspector by default on any port by default.
There is actually a pretty easy way to debug a website in Safari on iOS using Firefox WebIDE on a Windows machine. I wrote an answer at https://stackoverflow.com/a/35714835/306179 further describing this solution.