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How to set up OpenDNS or Google DNS on iPhone & iPad

iOS lets you set DNS per Wi‑Fi network. Cellular DNS usually follows the carrier unless you install a configuration profile.

Why change DNS on iOS?

When an app or Safari fails only on home Wi‑Fi, manual DNS on that SSID is the fastest fix.

Recommended public DNS servers

  • OpenDNS (Cisco): 208.67.222.222 / 208.67.220.220
  • Google Public DNS: 8.8.8.8 / 8.8.4.4
  • Cloudflare DNS: 1.1.1.1 / 1.0.0.1

Configure DNS for Wi‑Fi

  1. Open Settings → Wi‑Fi.
  2. Tap the information (i) button next to the connected network.
  3. Scroll to Configure DNS and tap it.
  4. Choose Manual.
  5. Remove existing servers if needed, then Add Server for 208.67.222.222 and 208.67.220.220 (OpenDNS) or 8.8.8.8 and 8.8.4.4 (Google).
  6. Tap Save. Open the site again in Safari.

Refresh network state

iOS does not expose a flushdns shell command.

  1. Toggle Wi‑Fi off and on.
  2. Or enable Airplane mode briefly, then disable it.
  3. If problems persist, Reset Network Settings (this forgets Wi‑Fi passwords).

Verify it worked

Test the same site on cellular. If only Wi‑Fi fails, keep manual DNS or fix the router DNS for the whole home.

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