Latest update brings you the facility to setup static IP for your Wi-Fi in windows phone. Do remember that your router / DHCP should support allocating static IP for this feature to work.
- Navigate to settings.
- Search or navigate to “Wi-Fi”.
- Scroll all the way down and tap “static ip”.
- Turn on “Configure network settings manually”.
- Key in the IP address, subnet mask and other details.
- Tap on done.
This feature was added into Windows phone based on user requests submitted to http://windowsphone.uservoice.com