Firstly, thanks for creating a lovely, responsive theme!
I have been testing it out on desktop, tablet and phone. Everything is working fine, except that when I view the test site on my Samsung Galaxy Ace (running Android 2.3.5 Gingerbread) phone, the mobile menu icon which should be three horizontal bars looks instead like a Japanese character.
If I go to http://genericons.com/ on the phone all the icons render correctly, and the same icon in the mobile version of wordpress.org looks OK too.
Any suggestions please?