On my bill we have 4 phones. It says "minutes" as in calls with the amount of minutes used. The other is " text messaging" with a number say, one phone says " 124" the other " 76" another ."227" etc. what does this number mean? And why can't I see the numbers being text or received? I know iMessage doesn't show on bills. So what are these text messages assuming it's SMS, why can't I see the number being text to and or received?