TechTips: How to Open Apple’s Hidden iPhone Diagnostic Tool

TechTips
Written By Thomas Fraley

This TechTips video walks through Apple’s built-in iPhone diagnostic and repair mode, using an iPhone 15 Pro Max as the test device. The basic idea is simple but easy to miss: fully power down the phone, wait a moment, then hold both volume buttons while connecting power until the diagnostic screen appears.

Once inside, Apple exposes a set of useful checks for things like display pixel anomalies, multi-touch response, audio, FaceTime ID sensors, camera image quality, and mobile resource inspection. It is not a magic fix for every iPhone problem, but it gives you a practical first look before deciding whether you need Apple Support, a repair appointment, or more troubleshooting.

What I like about this tool is that it makes iPhone troubleshooting a little less mysterious. If you suspect a bad screen, touch issue, microphone problem, or camera concern, running a quick diagnostic can give you better information before you hand the device off to someone else.

Thomas Fraley
I am a tech enthusiast whose main focus is making technology easy again for everyone. Educated with degrees in network engineering and project management. I've worked in the entertainment industry for a decade as a director of information technology for global companies pioneering the way. A few years ago I decided to give back and have been helping young entrepreneur startups off on the right foot.
www.lifewithtech.net
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