Can I use static ip on wp8 ? In my office they use ip addresses over wifi network . If I want to connect through the wifi it requires to put IP,Subnet Mask,Gateway and DNS Server. On Android or iOS we can easily put IP and DNS.
I'm not aware of any option to let you specify a static IP address on a Windows Phone client. A more secure option would be to use MAC filtering over the WiFi network, and assign the IPs to trusted MAC addresses (if you really need them to be static)