A couple of months ago, I noticed my battery draining quickly while I was at work (data, not wifi) and not long after that I received a notice that I had used 75% of my data in less than 2 weeks! My daughter and I share 10GB data and we rarely use more than 4GB total.
Called tech support, realized it was YAHOO MAIL draining my juice and data, Support suggested uninstalling and reinstalling the app thinking maybe there was a glitch in updates causing it to constantly sync everything,. I uninstalled the app, waited until my billing cycle had ended and reinstalled it.
Same thing happened within days.
