As iMessages are not billed, how is it possible for me to monitor my or my family member's iMessage activity? The incoming/outgoing iMessages do not show up on the bill whatsoever.
They are billed as data, but you no longer get to see the phone numbers or a count of sent/recived between iOS devices. If you must know who is texting whom, disable iMessage in the phones you wish to track, and add parental lock to prevent monitored person from changing setting back.
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