WhatsApp appears to be rolling out its video calling feature for beta users of the Android app. The arrival of the feature was first spotted by Android Police, which found that an updated app interface caused some users of the beta builds of the application to be able to access video calling. TechCrunch reports: For those on a version of WhatsApp which includes video calling support, you're able to tap the call button or tap on a contact card to kick off a video call. In this case, a new dialog box will appear, offering the choice between a standard voice call and a video call. In addition, the call log will show which calls were made via video by annotating them with the camera icon, instead of the telephone icon. However, there isn't yet a way to call other WhatsApp users who don't also have video calling support. If you try to, WhatsApp defaults to a voice call. Android isn't the only platform where video calling has been switched on. Last week, some users on the WhatsApp beta for Windows Phone were also surprised to find that the feature was now functional. And in this case, it didn't require an app update -- indicating a server-side change could enable it. Some users have also reported seeing the feature on iOS.