SAMSUNG MOBILE WIFI DNS ERROR

I was using samsung 5233w phone, which had WiFi in it. But whenever I tried to conect to internet with it, it showed "DNS ERROR" . I searched on net, but couldn't find any useful answer. After some tries, I found a solution. The thing is very simple for some people, but some all are not much techie.  Hope it will be useful for them. I am explaining here for samsung 5233w model. It will be similar if not same in other mobiles also.

• First go to WiFi menu and search for available wifi connection
• Click any and connct to it
• It will propt you to save the connection settings. In the space for DNS give 208.67.222.222 208.67.220.220 and keep other settings as it is. Save it
• If it is not asked for saving settings in last step, go to browser and create a new profile. Select wifi as connection type and give DNS provided in last step as DNS. 
• Now select that profile as default in browser. Now you are ready to browse, with high speed of WiFi network.