Smartphone location services provide convenience but also track user movements, potentially sharing data with companies for various purposes like improving products, sharing with third parties, and serving targeted ads. The technology used for tracking includes GPS, cell towers, public Wi-Fi, and Bluetooth. Users can limit tracking by turning off location services, disconnecting from networks, providing app permissions selectively, deleting old apps, using VPNs, turning off app tracking, and opting out of cell phone carrier ad programs
```https://www.mcafee.com/blogs/mobile-security/location-location-location-three-reasons-it-matters-for-your-smartphone/