Mobile VoIP (mVoIP) is growing in popularity. The growing number of mobile SIP clients on the App store is a testimony to this fact. However, one issue that plagues the rapid adoption of VoIP on smart phones is that most of these SIP clients are PAID. We have already covered two mobile SIP clients that...

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Since I wrote the last tutorial on how to make unlimited free calls to USA using Whistle on the iPhone/iPad, I have received several emails/tweets wanting a similar solution for people who do not own an Apple iPhone or iPad. No iPhone or iPad, no problem!! Here is a tutorial on how to configure Whistle...

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Last week when I was browsing through the iPhone App store, I stumbled across a mobile VoIP (mVoIP) app – Whistle Phone. Free calls, local USA DID, 3 way calling – it sounded too good to be true!! Given the questionable quality of lot of apps on the App Store, I started testing Whistle Phone...

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