What is the device that you're trying this on - Android or iOS? You can check this post
for more information and you could try this sample
that shows how to open pdf file using childBrowser plug-in.
Note that today we've released Icenium v1.3 where we introduced Cordova v2.4 support
and therefore you should be able to use InAppBrowser
directly, instead of the childBrowser plug-in.
Review the referenced forum and give the sample a go and let us know how it goes.
All the best,
the Telerik team
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