iOS Privacy Settings: Complete iPhone Security Guide 2026

Start with Settings > Privacy & Security > Tracking and disable Allow Apps to Request to Track. This prevents apps from accessing your IDFA advertising identifier. Next, go to Settings > Privacy & Security > Location Services and set each app to While Using or Never — avoid Always unless essential for navigation apps. Disable Precise Location for apps that only need approximate location like weather and news apps. These two changes alone significantly reduce the data apps collect about you.

Enable Advanced Data Protection in Settings > Apple ID > iCloud > Advanced Data Protection. This enables end-to-end encryption for iCloud Backup, Photos, Notes, and other data that Apple could previously access. Without this setting, Apple holds encryption keys and can comply with law enforcement requests for your iCloud data. With it enabled, only your devices can decrypt the data. The trade-off is that Apple cannot help you recover data if you lose all your devices and recovery key.

Go to Settings > Siri & Search and disable Improve Siri and Dictation, which sends audio samples to Apple. Disable Listen for Siri to prevent passive microphone access. In Settings > General > Keyboard, disable Predictive Text and Auto-Correction if you want to prevent keystroke analysis. Consider using a third-party keyboard like SimpleKeyboard that processes text locally without cloud connections.

Review Settings > Privacy & Security for each category: Contacts, Calendars, Reminders, Photos, Bluetooth, Local Network, and Health. Remove access for any app that does not need it. Pay special attention to Bluetooth and Local Network — many apps request these to track your proximity to beacons and other devices. For Camera and Microphone, only essential apps should have access. Safari should have Location set to Deny and Camera/Microphone set to Ask.