If you haven't got an unlimited plan on your phone, you'll need to keep an eye on your mobile data use each month. You don't want to run out right when you need it the most or get hit with extra ...

Switching your mobile data off and on only when you want to use the internet is definitely not enough.

Regardless of whether you have an AT&T, T-Mobile or Verizon plan, your data is being tracked by default. Here's how to protect your privacy and turn it off.