Hello,
The address bar should be hidden on the initial page load. The approach, however, is not 100% reliable, and sometimes it does not hide it. We are looking into improving this for our upcoming service pack.
I am not sure that I understand the appMode snippet you have pasted. The mobile application does not have such flag (and the code itself, although valid javascript, does not do what's you probably mean).
All the best,
Petyo
the Telerik team
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