My samsung gtb 7722 showing DNS failed error in youtube pls send solution

When I open a web browser show a message DNS failed

Connect with service provider of your sim card

I have a samsung gt-b7722 mobile when I want to see the videos on youtube the mobile set shows a massage DNS failed. Please give a solution as early as possible.

check your phone specs once again and if direct youtube videos are compatible....
also. what is the error that is being displayed is it " theme/file/etc not supported"
if yes then your phone is not compatible with youtube or any other video

while opening video from youtube , DNS failed message is showing and I am unable to open the videos. I am having the Samsung GT-B7722 mobile Set.

Change your network settings.
Go to Menu-> Settings -> Network Settings -> Network Mode... Select GSM 900/1800 ... It will Work...

I have samsung duos 3G+2G B 7722. I am not able see you tube video. display on screen DNS failed. Give me solution.

I am unable to open messages in my samsung B7722,it's showing scanning failed...

DNS failed-WiFi connection error
Invalid ID or password- Carefully enter your ID and password
And the other thing you are teeling me I cannot understand , Well if it's about working of youtube it plays it quite well on mine.

It could be some problem with the settings for MMS in your phone.

Please check your MMS settings. If they are not entered, then you can get it from your service provider.

Thank You