1. Significant Locations
Your iPhone keeps track of places you visit most often through a feature called Significant Locations. While this is meant to personalize services, like predicting your commute time or suggesting nearby restaurants, it also means your phone is logging a detailed map of your movements, often without you even realizing it. Even though this data is stored locally, it can still pose a privacy risk, especially if someone get ahold of your device.
To minimize this risk, you can turn off Significant Locations. Go to Settings > Privacy & Security > Location Services > System Services > Significant Locations, and toggle it off.
2. Location Services
Location Services control which apps can access your real-time location. But many apps request this permission even when they don’t really need it, and allowing unnecessary apps to track your location can drain your battery and expose more of your personal data to companies.
To regain control over your location information, head to Settings > Privacy & Security > Location Services and review the list of apps that may have access to your location. For each one, choose “While Using the App,” “Ask Next Time,” or “Never” depending on your comfort level.
3. App Tracking Transparency
Apple’s App Tracking Transparency feature gives you the option to block apps from tracking your activity across other apps and websites, which is great for privacy. When this setting is enabled, apps can’t use your data to profit from targeted ads. But if you’ve previously allowed tracking (knowingly or not), advertisers may still be collecting and sharing your data.
Go to Settings > Privacy & Security > Tracking and make sure “Allow Apps to Request to Track” is turned off. This prevents apps from even asking to track you going forward.