Samsung Galaxy S2 "Network error, Please check the network"

    Hello Guys,,,
     Facing a strange problem with your samsung galaxy s2 or anyone from this series "Network error, Please check the network"??? Whenever you try to call someone or even brows your phone???


 The solution is here:

    Finally I have found it was coming from the app "Best Wallpapers HD" which was generating this message each time wifi was off...
I have cancelled the app and the message appears no more.

Try it & have fun.