How to Turn off Ads by Google on Androidの効果的な手順を分かりやすく案内します。どなたでも必見の内容です。

Some apps are rogue agents. They show you ads from their own shady networks, not Google. For that, go into Settings > Apps, pick the offending app (you know which one—the flashlight app that talks to you), and hit "Disable" or "Force stop." Better yet, uninstall it. If a flashlight app needs permission to see your contacts, it’s a snake wearing a top hat.