STEP 1: Open Facetime software from your iPhone's house monitor.
STEP 2: The Facetime name you wish to have to monitor, faucet the small “i” icon, as noticed at the left screenshot above.
STEP 3: This will take you to the Contact and contact main points. Right on the most sensible, you'll be able to see whether or not it used to be an incoming or outgoing name, the period of the decision, in addition to the volume of data used for that decision. In the instance above, you'll be able to inform that my minute FaceTime name used 8 MB of data.
Note that whether or not you make a decision over Wi-Fi or mobile, the FaceTime app will display you the data used. To my wisdom, there is not any approach to differentiate mobile as opposed to Wi-Fi calls within the FaceTime app. This tip works for each FaceTime audio and video calls. The comparable knowledge can be accessed from the Recent tab within the Phone app.
What do you assume ?