Fix Obtaining IP Address Android WiFi Problem.
This is a common problem in android.
The name of the issue says it all. Android fails to obtain an IP address from a wireless router: connection attempt fails. It goes through stages in an infinite loop:
1.Obtaining IP address
After searching about this problem on internet, I found that many other people facing the same problem.
There is a light weight app, that fix this problem in single step.
Download WiFix from Google Play