- Don’t use multiple profiles on your private phone, doing so can mix metadata.
- If you ignore point 1, always close your other profile manually in Settings after switching.
- Don’t sign in to Google or Microsoft accounts on your GrapheneOS device.
- Rely on Obtainium and F-Droid for apps.
- (Optional) Avoid installing Google Play Services.
- Keep your phone in airplane mode, and set Wi-Fi to turn off automatically one minute after you leave home.
- Avoid SIM cards, since carriers can track your location with extreme precision.
Ultimately, GrapheneOS is just a de-Googled OS. Don’t walk around with a false sense of security just because you use it.