To use a html file stored on the device you must use the file:/// prefix when entering your URL. An example would be something like file:///sdcard/webfolder/index.html within Settings > General > Kiosk Url
Alternatively you can point to kioskbrowser/localcontent by just using a simple variable: %LOCALCONTENT% i.e. %LOCALCONTENT%/index.htm
Or %LOCALSTORAGE%/myfolder/index.htm (requires version 2.0.36 or higher to use this parameter).
For more information on file paths please see our Default Storage Location guide
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