Your iPhone uses information from your cell service, Wi-Fi, Bluetooth, and GPS to pinpoint its location, and since you almost always have your phone on you, your location as well. That information can be useful for a lot of things, such as letting others know where you are or finding your phone when it’s lost. Other times, it’s just more data that services and companies collect about you, creating privacy concerns.
The good news is you can tighten your controls so that apps are only accessing your location when it’s necessary.
Toggling your location settings can differ from phone to phone, depending on what model of iPhone you have and what version of iOS it’s running. The following directions were tested on an iPhone 11 running iOS 15; if you’re running a different version of iOS, there shouldn’t be much difference.