I have this problem with my wi fi on my s3. When im near at the router the signal is very strong. But the moment i went to my room, the signal drops off. And to thinks its likes 3 steps away. I don't understand why is it like this. I did everything like shutting off the router, then i already did the *#0011# nothing happened, please anyone help me how to solve this problem of mine... thanks in advance.