Lately I found out that facebook comment is not working on google chrome or on iPhone, it just got stuck at fb_loader. Every other browser works fine Does this happen to your guys?
It is happening due to lower speed of internet either it is on pc or iphone that is why it gets stuck while loading facebook because it needs higher speed to be fully loaded.
For me it is working fine, so like suzzane said it must be your phone or connection...either that or you have run out of memory on both devices and facebook is too heavy of an application to run...try restarting your computer if you are using wifi, sometimes that seems to work for me