VoIP providers take differing approaches to providing cheap overseas calling.
The iPhone has certainly been at the center of the news recently. Apple Inc. introduced the new iPhone 3G model and sold more than 1 million of the devices the first weekend that they were available. And through its online App Store, Apple for the first time began to offer third-party applications that can run on both new and earlier iPhone models (the latter requires users to upgrade to version 2.0 of the operating system). For many cost-conscious users, the most important iPhone apps will involve VoIP, which will let them avoid the high cost of calling overseas from a mobile phone. But as is the case with all mobile VoIP solutions, iPhone VoIP will come with trade-offs
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