Mobile providers have been ordered by the government to start warning their customers that they are about to go over their data plan limits. The order will save consumers millions! However, the data overage warnings don't have to be fully activated for months. So if you own an iPad or iPhone here's how to save right now: download DataMan. It is a free app that keeps track, in real time, of your data usage. It doesn't stop you from going over your prepaid limit but it does let you know how much you are using. For $4 dollars DataMan Pro tells you which apps are eating up all that data and much more. There similar apps available for Android devices, so don't overspend every month on data, instead keep track.