See How Much Data a FaceTime Call Uses on iPhone
FaceTime is the lovely video chat service that is available for iPhone, iPad, iPod touch, and Mac OS X, and while it’s a lot of fun to use and helps keep people in touch, something to keep in mind is that FaceTime can use quite a bit of data as it’s essentially streaming and uploading video simultaneously. If you just use FaceTime on a wi-fi connection then this likely won’t matter much, but for cellular users it can be good to keep track of that sort of thing.
You may also just be curious how much data gets used during a FaceTime video call or audio chat, and fortunately iOS makes that really easy to find out on a per call basis.
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