( CNN ) -- Skype released a new version of the telephony application for iPhone , which adds video-chat features that go beyond what Apple offers . With the Skype app released on Wednesday , owners of the iPhone 4 and the older 3GS model can make video calls over AT & T 's 3G network . Since the 3GS only has a camera on the back , using it for video conversations is less than ideal . Apple 's own FaceTime video-chat feature , which comes with the iPhone 4 and new iPod Touch gadgets , can not make calls over AT & T 's network , only on Wi-Fi . Apple said carriers requested time to upgrade their networks to handle the traffic load of video calling . Mobile FaceTime users can call Mac computers that have Apple 's beta program installed , which is available on Apple 's website . Skype app users can call both Mac and Windows computers that have the Skype software installed . In addition to 3G video and voice calling , the Skype app can also call over a Wi-Fi connection . The iPad and previous iPod Touch model can receive video calls but can not transmit video because they do n't have cameras . CNN tested the iPhone app on Wednesday night , after it appeared on the App Store . Video quality is n't as sharp compared to FaceTime , but like FaceTime , the app recognizes when it 's held in portrait or landscape mode . Speculation about Skype adding video features had begun to spread this week , with some reports suggesting the feature would be the focus of the company 's press conference at the Consumer Electronics Show next week . Skype 's Android app does n't yet support video calling , but other app developers have found workarounds . The Skype servers suffered a lengthy outage a week ago , which the company blamed on buggy software . Skype has been briefing news reporters on the iPhone app announcement , which it is scheduled to make at 2 a.m . ET Thursday .
Skype adds video-chat feature to its Apple iOS app . iPhone 4 and 3GS users can call over AT & T 's 3G network . Users on the iPad or older iPod Touch can receive video calls .