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Hardware Test for Iphones: Memory, Battery and Display

Summary by Macwelt
If you want to check the functionality of an older iPhone, this is not so easy. On a Mac, there is the pre-installed hardware test for this task: You simply press the D key when you start an Intel Mac and the hardware test program opens, which checks components such as SSD and RAM and displays errors. On the current Apple silicone macs, hold down the turn-on key at startup. Only for iPhones starting from iPhone 12, Apple introduced a similar dia…
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If you want to check the functionality of an older iPhone, this is not so easy. On a Mac, there is the pre-installed hardware test for this task: You simply press the D key when you start an Intel Mac and the hardware test program opens, which checks components such as SSD and RAM and displays errors. On the current Apple silicone macs, hold down the turn-on key at startup. Only for iPhones starting from iPhone 12, Apple introduced a similar dia…

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Macwelt broke the news in on Thursday, August 14, 2025.
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