If there is a problem with the iPhone and it needs to be repaired, Apple’s online customer service will ask the user to provide analysis, diagnosis and usage information. If it is taken directly to the store, it will enter the iPhone diagnostic mode, which is convenient for Apple maintenance engineers without knowing the user’s iPhone unlock password. , which is convenient for detecting whether there is a hardware failure on the iPhone.
How to enter the “iPhone diagnostic mode” that most people don’t know? Teach you how to activate the black technology mode that only Apple’s repair department knows.
How to enter iPhone diagnostic mode?
You can use the following techniques to put your iPhone into diagnostic mode, allowing you to experience firsthand how Apple engineers conduct phone testing:
Tutorial on entering iPhone diagnostic mode for Touch ID models
- Turn off iPhone
- Connect iPhone with Lightning cable
- Press and hold the iPhone’s “Touch ID button” and “Volume +” buttons until the Apple logo appears.
- After a while, the iPhone will enter diagnostic mode.
Tutorial on entering iPhone diagnostic mode for Face ID models
- Turn off iPhone
- Connect iPhone with Lightning cable
- Press and hold the “Volume Up and Down” buttons on your iPhone until the Apple logo appears.
- After a while, the iPhone will enter diagnostic mode
No matter which iPhone model it is, you can use the above method to smoothly enter the iPhone diagnostic mode that only Apple’s repair department knows. If you want to exit the diagnostic mode, just press “End Diagnosis”.
What does iPhone diagnostic mode do?
The iPhone diagnostic mode mainly detects whether there are abnormal problems in the hardware and software. It can read the abnormal results of the device without the user having to unlock the iPhone or know the unlock password.
Generally, there are two types of Apple internal detection and diagnostic tools, namely:
- Diagnostic network transmission tool: com.apple.mobile.pcapd
- System file diagnostic tool: com.apple.mobile.file_relay
Usually when an iPhone has a problem, it is taken to an Apple store or Apple authorized repair center. Most Apple repair engineers will also obtain device abnormality information in this way. The diagnosis process will not involve the user’s personal privacy information, and everything will be complied with. Four principles:
- Minimize data collection;
- Restricted use of user information;
- User consent is required before use;
- Strictly ensure process safety.
For ordinary users, this method simply allows iPhone users to understand that the mysterious “diagnostic mode” hidden in the iPhone requires Apple’s internal diagnostic tools and equipment to read the cause of the device hardware or software failure.