How to configure Static IP on iPhone
Assuming iOS 6:


Tap on “Settings” and then tap on “General”
Tap “Wi-Fi” and look for the network name you are connected to, tap
the blue (>) arrow next to it
Tap the “Static” tab and enter network appropriate DHCP/static IP
information
   Close out of Settings and launch Safari or another network app to confirm connectivity






To see the MAC Address of your iPhone,


Tap on “Settings” and then tap on “General”
Tap “About” and look for the "Wi-Fi Address"