If you have a small monthly data allowance, it's important that you don't go over that. Here's how to prevent apps from using up all your iPhone data.

The iPhone has a remarkable ability to pinpoint your location, using a variety of technologies and tricks. And it can make this location data available to apps that you have installed.

Health and fitness tracking apps can help us get in shape, but it's important to understand how apps use personal data, Kurt "The CyberGuy" Knutsson explains.

If you've granted a third-party iPhone app certain permissions, you can revoke them at any time. Here's how to stop third-party apps from accessing your data.

Apps may access data in the background, which suggests that data traffic increases each time an app is updated. Apart from just using mobile data, your iPhone has Wi-Fi Assist enabled by default.

Your favorite apps are taking advantage of a loophole in how push notifications work on iOS to scrape your personal iPhone data. Here's how to stop them.

There's also another setting, Background App Refresh, which can be turned off to stop apps from continuing to whirr away even when you're not using them. To turn it off, go to Settings, then General.

How much data those apps use; however, can vary pretty dramatically. For people with limited plans, staying on top of which apps are using up data on your phone is pretty important.