Skype for iPhone certainly isn't perfect, but it looks good, is easy to use, and offers excellent voice quality - particularly when making Skype-to-Skype calls.
Skype for iPhone offers features similar to those found in the company's other mobile versions, which work on Windows Mobile, Google Android, and Java-based phones.
It lets you see when your Skype contacts are online and available; make free Skype-to-Skype calls; use the SkypeOut feature to make calls to landlines and mobile phones; send instant messages to your Skype contacts; and receive incoming calls via a SkypeIn number.
You can't make video calls or conference calls, as you can with the desktop version of Skype, but you can, reportedly, accept an incoming conference call (though we weren't able to test this feature).
Skype for iPhone: getting started
We downloaded Skype for iPhone from the App Store, signed in with our username and password, and the app automatically imported all of our account info, including contacts and the available balance in our SkypeOut account.
The Skype for iPhone interface is very similar to the Windows Mobile version, though it does have an iPhone feel. The dialpad, for example, looks very similar to the iPhone's own dialpad; the same is true of Skype's contact list, which offers an iPhone-like filtering tab.
Skype for iPhone requires Wi-Fi to make any kind of voice calls. 9to5Mac was able to make voice calls over AT&T's 3G network in the US on an iPhone running the not-yet-released 3.0 software; we tried the same thing on a Apple iPhone 3G running the current 2.2 software, and were unable to connect.