Google offers several diagnostic tools depending on the product. For Pixel phones and tablets, there's a built-in diagnostic tool accessible via a dialer code (##7287##) or within the "Update and Software Repair" section, allowing users to test device functionality. For Chromebooks, a diagnostics app within the settings allows users to test system components, connectivity, and keyboard. Google also provides diagnostic tools for Google Ads, including the Ad Preview and Diagnosis tool, which helps