With smartphones becoming more prevalent with larger screen resolutions and more of a "desktop feel" to the browsing experience, it really is a good time to look at creating a mobile version of your website.
However, there are still a few things to bear in mind. Even with the increased bandwidth of 3G it is not universal, especially on the move. And typically, browsing will be more restricted to the core elements on a given website. That is why the best mobile web experiences offer a variant of their website optimised for the web. This should include thinking about:
Just because a 4 inch screen may have 800 pixels across doesn't mean that text is legible when designed for that screen resolution. Key things to think about when designing for a mobile phone web interface include:
There are a number of technical and design specific issues as well around web design for mobile devices and if you're interested about those, we'd be happy to have a chat and see how we can help.