how to use Firefox but pretend that I am using iPhone (to use Firebug to examine the page design)

Question

Is there a way to use Firefox and Firebug but pretend it is iPhone's Safari by faking the User Agent string? I want to use Firefox to examine the Amazon or Gmail sites and see how the page is laid out for iPhone... just for fun and for experiment. Is there a way? thanks?

Answer 1

You can fake the user agent string using the instructions great_llama provided, but remember that Firefox is not Safari and it probably won't lay out the page identically. If you're on a Windows or OS X machine you can use Safari to see how it will look with a higher degree of accuracy.

Answer 2

Here are some instructions on how to do it.

Answer 3

Go to the emulator and you can run your dev version. You can then use firebug on the emulator frame