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People, i´m building an online VOIP app with ruby and i want to extend this app for iphone users. So i need any information on how to make the web app available on iphones (in the future, for any cellphones). The best that i get so far was this one. Any tips ?

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I assume you need access to iPhone hardware features (microphone, etc). Unfortunately, you can't do that through mobilesafari.

Check out the iPhone SDK for more info: http://developer.apple.com/iphone/

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