DNS servers are typically specified under advanced wi-fi settings. However, as every mobile device uses a different user interface for configuring DNS server settings, we provide only a generic procedure below. For more information, please consult your mobile provider's documentation.
To change your settings on a mobile device:
Go to your Settings.
Go to the screen in which wi-fi settings are specified.
Press and hold your current wi-fi connection and select 'Modify network'.
If there are IP addresses specified in the fields for the primary and seconday DNS servers, write them down for future reference.
Save and exit.