How to Fix DNS Leak on iOS

On iOS, profiles, content filters, and app DNS features can produce mixed resolver traces during VPN sessions.

1. Reconnect VPN and confirm the VPN icon remains active during the full test.
2. Disable third-party DNS profiles or content filters temporarily to isolate resolver path.
3. Disable browser secure DNS toggles in apps that support custom DNS.
4. Forget and rejoin Wi-Fi if resolver cache seems sticky after VPN changes.
5. Run deep mode after quick mode to verify resolver concentration.