Can the iPhone continue to be located after shutting down? It was not possible before, but with the development of technology, not only can the phone be turned off and located, even if the phone is reset or flashed, the phone can still be located by virtue of the owner's Apple ID and password.
The shutdown positioning of Apple mobile phones is based on iOS 15 and AOP processor. AOP (Always-on Processor) is a small, low-power, "always-on" auxiliary processor.
Shutdown positioning implementation principle
To achieve shutdown positioning, two problems need to be solved:
- After shutdown, there is still a processor working, and the location information of the machine can still be obtained and sent;
- After is turned off, the phone can still connect to the Internet.
For question 1, mobile phone manufacturers can basically achieve it. The batteries are basically built-in and cannot be disassembled. It is nothing more than a fake shutdown. At most, who is doing more energy-saving.
For question 2, there are two solutions, the first is virtual SIM card (eSIM), and the second is Bluetooth bridging. Solution 1 The virtual SIM card technology is mature, but it involves number supervision, and whether it can operate requires the approval of the supervisory authority. Apple's mobile phone adopts plan two, which is the first plan of Apple . Shut down the iPhone and cut off the direct connection method. Naturally, I think of indirect connection. Turn off the iPhone and let AOP keep powering on. AOP will discover peripheral Apple devices through Bluetooth broadcast. Internet-connected Apple devices help. AOP connects to other Apple devices via Bluetooth Low Energy, that is, bridges to the connected Apple device, uses the device as a router, and indirectly connects to the Internet, and sends Apple ID and location information to the Apple backend. . When the iPhone is turned off and moved, the positioning software on AOP can drive GPS and Beidou modules to obtain the location of the phone.Or AOP obtains the location directly from the bridge device.
Which iPhones support shutdown positioning
Software: iOS 15
Hardware: iPhone 11 and later models
How to turn on the shutdown positioning switch
— in turn Apple ID "-"Find"-"Find My iPhone", turn on the switch on the right side of the "Find" network.
How to check whether the iPhone supports shutdown positioning
Go to "Settings"-"General" in turn, click the last "Shutdown" menu, if it is shown in the figure below, it means that the phone supports and Turn on shutdown positioning.
Shutdown positioning is a double-edged sword, which greatly increases the probability of the phone being retrieved after it is lost, but at the same time the privacy of the owner is also facing greater threats. Fortunately, the owner can decide to turn on or off the shutdown positioning. switch.
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