Mobile phones give out information about their location on the mobile network. Mobile applications can also utilise your phone's geolocation capabilities to attach your location to particular pieces of data that get posted online or sent to others, like a photo, video, tweet, or Facebook update.
For users who are not concerned with having their location known by their mobile provider, but may not want their geolocation attached to all their data: In this case, when using applications on your phone that capture media or upload information to others, you can de-select "add geolocation" or "add my location" in the settings for various applications. This is often an option for cameras on phones, for social media applications, and for streaming videos from your mobile phone to an online site.
For users who are at high risk or are more concerned about revealing their geolocation to anyone: Ultimately, the only way to ensure your location cannot be identified is to turn your phone off and remove the battery. In this case, we also suggest that you make calls from different locations each time and choose locations that are not associated with you.