For every developer who uses advertisements in his/her applications Don't risk that invalid traffic caused by your own devices is subtracted. It can lead even to suspending your ads account! Generate the Test Device ID for Ads for your own phone and add it as a test device. Generate the Test Device ID for Ads for any phone/tablet by providing its AndroidID. Hit the share button or long-press to copy the ID out of the application. Example of use of the DeviceID and adding it as test device: