how can i add static IP in Nokia Lumia 630 ??
Currently there is no option in settings. Is there any other way where i can directly insert static IP in system through any software ??
This feature seems to be availiable only for certain phones with Windows Phone 8.1. See also the suggestion for this feature on the Windows Phone UserVoice site.
Go to settings > wifi. On the bottom of the screen, you would see a button >Static IP. Click on the button, and you would be able to specify the IP address, the subnet mask, the gateway and the DNS.
I have been using the same behind my corporate proxy and DNS, which have DHCP turned off and require each connecting device to have a static IP.