How to add Cloudflare DNS on your Android device
Head over to Settings > Wireless & Networks > Wi-Fi on your smartphone. (Menu options may be different on different smartphones. For instance, on Samsung phones, you will find this under Connections).
Select the Wi-Fi network that you are connected to, and tap on hold on it. Next, tap on “Modify Network.” (On some phones, the option may be called “Manage Network Settings”)
Now, tap on “Show Advanced Options” and tap on “IP settings.” By default, it will be set to DHCP, and you’ll have to change it to Static.
Here, you will see DNS 1 and DNS 2 options. Delete whatever is already existing, and put 188.8.131.52 in DNS 1, and 184.108.40.206 in DNS 2. Once this is done, tap on save, and you’re good to go.
How to add Cloudflare DNS on your iPhone or iPad
Go to Settings > Wi-Fi and tap on your Wi-Fi network.
Tap on Configure DNS and change it from Automatic to Manual.
Under DNS Servers, tap on the “+” icon and enter 220.127.116.11. Once again tap on the “+” icon and enter 18.104.22.168, and then tap on save button on the top right. That’s it, you’re good to go.