1: 1. Set a strong passcode on your iPhone.

2: 2. Use Touch ID or Face ID for extra security.

3: 3. Enable two-factor authentication for Apple ID.

4: 4. Turn on Find My iPhone to locate device if lost.

5: 5. Use encrypted messaging apps for sensitive conversations.

6: 6. Utilize private browsing mode in Safari for online privacy.

7: 7. Disable Siri on lock screen to prevent unauthorized access.

8: 8. Regularly update iOS to patch security vulnerabilities.

9: Protect your private data with a secure VPN connection.