Unfortunately I don’t think there is an easy fix to this problem. You’ve got a theme optimized for the desktop and are opening it in a mobile phone, and that creates some problems with site width, readability, etc…
If you want a quick fix to make your posts readable on a mobile phone you might want to try WP Touch (http://ww.wp.xz.cn/extend/plugins/wptouch/).
If you’re looking for a more elegant solution, look into a responsive theme.
Foleyatwork thanks for your answer.
I tried WP Touch, but not quite elegant.
Does this sound that is a recurrent error?
This is really about a fundamental shift in web design. Until recently not many people thought about how sites look on a mobile phone.
You can change the viewport settings in your code to show a certain portion of your site on a mobile phone, but if you want a truly elegant solution to displaying your website on a mobile phone, you definitely need to look into a separate mobile site or a responsive site. That means recoding your theme from the ground up or adopting a new theme.