iPhone users can now make video calls over a 3G data connection using the free Skype app, available today on the App Store.

The new Skype for iPhone app is compatible with the iPhone 4, iPhone 3GS, and iPod touch 4th generation with i0S 4.0 or above and works over 3G on 3G enabled devices, as well as WiFi.

Video receiving capabilities are available on the iPod touch 3rd generation and iPad.

Calls can also be made between devices using the new Skype for iPhone app and desktops including Skype for Windows 4.2 and above, Skype for Mac 2.8 and above, Skype for Linux and ASUS Videophone.

The new Skype app is available to download for free from the Apple App Store today, www.skype.com/go/iphone

"With video calling representing approximately 40% of all Skype-to-Skype minutes for the first six months of 2010, our users have been eager to get Skype video calling on their mobile phones," said Neil Stevens, general manager of Skype's consumer business. "By bringing video to mainstream users at their home or work via their desktops, on the go with their mobiles, or into their living room via their TV, Skype has made it possible for millions of people to share video moments wherever they are."

Skype warns that additional data charges may apply when making a video call over 3G. The company also notes that to get the best quality a strong WiFi connection is best for video calling.