Someone asked me to make his site theme mobile friendly, and he gave me his theme which is Twenty Eleven theme. I want to know is this theme mobile friendly at all of has some bugs on mobile displays ? Also is any recent updates to this theme, or will be in near future ? because I want to know if I want to make it responsive, should I make my changes as a child theme ? what’s the best way to change the source code of this theme ?
Thanks in advance.