Nice theme on computers and ipads but the menu on iphone looks TERRIBLE! You have to click on an icon over on the right of the nav bar to open up the menu.
If you want to see what I mean, open the theme demo page on your phone at http://themeid.com/demo/responsive/
Also the sidebar widgets are displayed underneath the main content instead of to the right or left.
If you need a theme that looks good on a phone then go for a different them or investigate this fully before you go to the trouble of installing and customising!