With mobile becoming more and more important, many web designers and developers are creating websites specifically for this platform. However, many sites designed for the computer web browser display reasonable well on smart phones. As a user of an Android-based phone, one thing that always annoys me is that phone numbers on the sites are not clickable. Of course, if you code something like:

<a href="tel:+15551112222">555 111 2222</a>

you will get an error if you try to open the link in a computer web browser.

So, should we all at least use some “light detection” capabilities such as Lightweight Device Detection in PHP? I am beginning to think this may become more and more important.