DNS or Domain Name Server is responsible for translating the web addresses to the corresponding IP addresses of the website that you wish to load on your computer, smartphone or tablet. As a result, every device has a corresponding DNS address based on the network you are connected to. However, the moment you connect to a Wifi service, your iPhone or any phone for that matter, picks up the DNS address of the router.
DNS is a pretty big deal because, some DNS addresses help to resolve the web addresses to IP addresses faster than the others. For example, Google’s Open DNS which is 220.127.116.11 is perhaps one of the faster DNS out there and as a result if you feel that your internet connection is working just fine and still the web pages are loading slow, you may want to change the DNS of either your router or the device connected to it.
Changing the DNS of your router will require you to enter the router settings with admin rights and changing from there, yet most of you may not want to directly change the DNS in the router as a result, an alternative is to change the DNS on the end of your smartphone. We will take an example of changing to Google’s public DNS which is 18.104.22.168 or 22.214.171.124 in the post for reference. You can change to any other open DNS you may want, just make sure you know what you a re doing. For an iPhone running iOS 7 and above, just follow the steps below:
Step 1: Open the settings app from the springboard of your iPhone
Step 2: Click on Wifi. Make sure that the Wifi is turned on and connected to your home outer already and 3G is turned off, just to be sure.
Step 3: Click on the icon with i in circle next to the Wifi name to open the network settings.
Step 4: Under the DNS filed, click on the existing address and change it to the above mentioned open DNS addresses or the address of your choice.
In case you want to change to the default DNS address, you can simply click on Forget this Network in the network settings just above the DNS address and connect to the network again by entering the password or simply manually type in the DNS address from your router configuration. You can follow, the exact same steps on the likes of iPad or iPod Touch in case you wish to change the DNS of them too.