It’s possible that the problem you have right now on your mobile phone browser is due to the problem of Jetpack. Do you have Gravatar Hovercards enabled? This could be a big problem as your webpage can start breaking. As stated on this post online.
But if you can install a chrome browser on your phone, it seems that you may not have that problem. However, not all phones can handle chrome browser.
Other developers have also suggested that even JQuery can cause similar issues.
If you’re having error showing up on your website, why not look for possible solutions here?