Instructions
1) Open the Settings app.
2) Tap Wi-Fi.
3) Make sure that the switch next to Wi-Fi is in the "on" position (to the right).
4) Locate the wireless network to which your device is connected. Next to the network name, tap the information icon (circle with an "i" in the center).
Outcome
Your device's IPÂ address on the network is located next to the words "IPÂ Address".