A few months ago, google annouced that a website should be mobile friendly if they want a better rank in search engines. This makes a lot of website owners anxious specially those whose businesses depends on how many people are visiting their website.
If your website appears to have problems, a quick solution could be to download a plugin that automatically adds a simple and elegant mobile theme for mobile visitors to your WordPress website. I used wptouch and it worked perfectly.
Hope it works well for you too.