Solved Test deivce ID for AdRequest.addTestDevice(deviceID)
To debug application communicating with AdMob it is required use some "test device". It will show only test ads from server. AdMob will ban account if real ads are used for testing. To set this ID the call of AdView.loadAD(AdRequest) must be used with AdRequest filled by test devices IDs. AdMob will recognize test device by this ID and will give test ads. How to retrieve this ID for each test device? Is that the same as "device serial number"? The some ID is shown at right of QtCreator installation dialog (see picture). Is that the number which is needed?