There appears to be the really great reason because a iPhone 4’s brand-new FaceTime video-calling app only work upon Wi-Fi: On the cellular network, it sucks.

Mike Prospero of Laptop Magazine used a HTC EVO to spin a 3G (not 4G) tie into the Wi-Fi hotspot, tricking a iPhone into creation the FaceTime call over a mobile network. The second iPhone was upon regular Wi-Fi. The result, as you’ll see if you check a non-embeddable video which accompanies a post, is unpleasant. If you have ever had the bad, stuttering Skype call you’ll know what to design: audio breaks up, as well as job the choppy images “video” is free to say a slightest.

“Audio came by usually in rags, and video was similar to a slideshow at best,” says Prospero. Poor video opening over 3G isn’t singular to FaceTime, possibly. Tests of Qik as well as Fring uncover identical problems. Clearly, mobile networks aren’t up to a charge just yet.

So what of FaceTime’s destiny? I have the feeling that a iPod Touch will be removing an iPhone 4-style makeover during the common September iPod eventuality this year, as well as will incorporate FaceTime. Thanks to the Wi-Fi limitations, this feature will be during relation with a iPhone. And then, surely, it will come to a iPad, as well.

You know how everyone is on Skype as well as FaceBook since everyone else is upon Skype and FaceBook? The same thing will happen for iOS devices as soon as people get a small bit of FaceTime. When a mobile networks finally locate up, they’ll comprehend that they have become zero though reticent pipes for changeable data.

We Use iPhone 4’s FaceTime over 3G (Sorta) [Laptop Mag]