So, The sites has more need to be worked to have mobile version.
A good mobile website/Mobile version of the site must fulfill the following objectives:
The site should render well in the most typical sizes. The most popular size is currently 240 x 320, and as a rule of thumb if you develop a mobile site, ensure that your site caters for the most popular sizes.
Even bigger sizes such 480 x 320 (Iphone) are fast becoming more popular as phones come out with larger displays.
The content of the mobile version should be optimized; Images should be downscaled and downsized so they can load faster, and fit in the screen.
The mobile version of the site should be user friendly.
4) Good Design:
This is very important point for a mobile version of the site to look good, the design should be liquid based so that it can fit into all frames of mobiles, but shouldn’t make a cramp feel. Navigation is another important one and the site should load fast.