Show test ads on real device

Question

This is my code:

let request = GADRequest()
request.testDevices = [kGADSimulatorID, "XXXX2F32d69CCA859FFB559D0FEA3CF6483D08A6"]
adView.load(request)

Where XXXX is my UDID of my iPhone. Why do I get real ads and not test ads on my iPhone? Test ads on the simulator works. Thank you. Tried the UDID in uppercase and lowercase.

Answer 1

This fixed it for me!

Product -> Scheme -> Arguments -> Environment Variables if there is a key: OS_ACTIVITY_MODE, disable/remove it.