Solved - Solved -Solved

I held my iphone touching the antenna of WIFI router, it connected to the router. I was able to use the internet in this position only. Moving away from router's antenna, internet does not works. At leaset now I can do some very urgent works on iphone without GPRS connection.
I was not able to use my wifi for last six months. Done everything that was already discussed in all the forums.

YouTube - iphone - unable to join the network - Solved