Have you tried creating a mobile version of your website?
Here is a useful article that points the tips and techniques to ‘get your website mobile friendly’.
Whether you are in a quiet waiting room or a bustling restaurant, people around are mostly glued to their cell phones. Within the next five years, “More users will connect to the internet over mobile devices than desktop PCs,” says Morgan Stanley’s analyst Mary Meeker. With growing number of consumers browsing through web pages using their smart phones, it’s crucial for you to make your website accessible to these potential customers.
The article also lights an argument on people’s preference over virtual and physical keyboard. Would you rather use virtual or physical keyboard? I prefer “cell” and tablets with physical QWERTY keyboard.
You may also enjoy reading :-http://www.smashingmagazine.com/2010/11/03/how-to-build-a-mobile-website/