You can register an iOS or Android phone or tablet as a test device to test your Unity Ads integration without monetizing the device.
1. On the Developer Dashboard, select the Operate tab.
2. Select Test Devices from the left navigation bar.
3. Enter your device's name into the first input field.
4. Enter your IDFA (ID for advertising) into the second input field. For more information on locating your device's IDFA, review this guide.