How to Change DNS to Google Public DNS Servers on an iPhone?
Step 1: Open 'Settings' App.
Step 2: Tap on 'Wi-Fi.'
Step 3: Tap on 'i' button next to Wi-Fi network that you are currently connected to.
Step 4: Tap on 'Configure DNS' under 'DNS' Section.
Step 5: Tap on 'Manual.'
Step 6: Under 'DNS Servers' tap on '-' red button to the left of DNS Server, and then tap on 'Delete' button to delete the current DNS Server.
Step 7: Repeat the above step for other DNS Server if you have.
Step 8: Now, Tap on 'Add Server,' and put 8.8.8.8
Step 9: Tap on 'Add Server' again, and put 8.8.4.4
For more info on Google Public DNS Server, check the link below:-
https://developers.google.com/speed/public-dns/
Step 10: Tap on 'Save' button at the top right.
It's done.
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