Data can cost you big bucks if you're not paying attention. This article explains how to check data usage directly from an iPhone or Android phone or through a major carrier, such as AT&T, Verizon ...

It's important to check data usage on the iPhone in order to avoid expensive data overages, especially with the iPhone 5's 4G LTE connection & shared data.

We know that AT&T's sudden announcement that it will put a halt to unlimited data put a lot of you into a tailspin this morning, but now that you've had some time to come to terms with the change ...

Here's how to check your cellular data usage on an iPhone, and find specific readings for and manage each app's data.

From their AT&T Wireless account summary page, users can also click on the "View Past Data Usage" link to see a six-month history of their data usage to help gauge which new data plan they may ...