There is a diagnostic tool for iPhones/iPads, too. It's just not accessible to the general public. https://www.ifixit.com/News/33593/heres-the-secret-repair-to

There is a diagnostic tool for iPhones/iPads, too. It's just not accessible to the general public. https://www.ifixit.com/News/33593/heres-the-secret-repair-tool-apple-wont-let-you-have https://www.ifixit.com/News/33593/heres-the-secret-repair-to...