Please upgrade to the Kendo UI Mobile Q2 2013 SP release, which features official support for iOS7 and a brand new iOS7-like platform theme (activated by default).
On a side note, the address and tool bars in iOS7 can no longer be hidden by the same technique as before. The browser only hides them on actual native scrolling of the viewport with a finger and this is not possible to be triggered from a web application. You can either accept that or try the new application-wide useNativeScrolling option
which will hide it on scrolling down and show it on scrolling up. However be warned that this option has many disadvantages, which are listed in the article I linked.
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