App id always uses the real value (SDK init only, no ad-serving risk). Banner/interstitial pick the real unit id in release builds and Google's test unit id everywhere else, so debug/profile builds can never serve (or accidentally tap) a real ad.
App id always uses the real value (SDK init only, no ad-serving risk). Banner/interstitial pick the real unit id in release builds and Google's test unit id everywhere else, so debug/profile builds can never serve (or accidentally tap) a real ad.