What little doubt remained about the presence of video calling on the next iPhone may have been eliminated today as a screen capture has shown the feature running on live firmware. A source inside Apple has shown a field test version of iPhone 4.0 whose Settings area makes a clear reference to "video calls debugging" that lets engineers start, stop and export logs to track down errors. BGR didn't learn whether this would involve a proper iChat client, traditional video calls over 3G, or both.
