The experience of your web content on mobile operates very differently than what users experience on the desktop. The Google Chrome DevTools allow you to inspect, debug, and analyze the on-device experience with the full suite of tools you’re used to, meaning you can use the Chrome DevTools on your development machine to debug a page on your mobile device.
Debugging occurs over USB and as long as your mobile device is connected to your development machine, you can view and change HTML, scripts and styles until you get a bug-free page that behaves perfectly on all devices.
When debugging a web application served from your development machine, you can use reverse port forwarding to allow the mobile device to access a site from the development machine over USB. Reverse port forwarding requires Chrome 29 or later on the development machine, Chrome 28 or later on the mobile device.
You should test your web content on both the desktop and various iOS devices. If you do not have iOS devices for testing, you can use iOS Simulator in the iOS SDK. Because there is a difference between web browsing on iOS and OS X, you should specifically test your content on iPhone and iPad or emulate the hardware device in Simulator. When testing in Safari on any platform, you can use Web Inspector to debug your web content.