How can I secure my smartphone and prevent unauthorized access?

1. Set a strong passcode that only you know.
2. Enable fingerprint or Facial ID authentication if your device supports it.
3. Restrict access to your device using built-in access control features, like Screen Lock.
4. Turn off services and features you don’t use. For example, Bluetooth and NFC.
5. Get a VPN to protect the data you send and recieve on unsecure networks.
6. Back up your data regularly and keep it secure.
7. Be careful when sharing sensitive data.
8. Only download apps from trusted app stores.
9. Stay aware of security issues and update your device with patches to keep it secure.