There's a whole section on this panic on the [[iPhone Kernel Panics#Section_SMC_Panic_Assertion_Failed|iPhone Kernel Panics page|new_window=true]], but in summary, you're on the right track.
Panic Assertion failed is usually related to some sensor that isn't checking in with the System Management Controller (SMC).
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The unfortunate part is that the sensor your panic points to an issue with the logic board. The x400 sensor is specific to the iPhone 13 mini. The logic board for any iPhone X or new (save the XR and the 2020 and 2022 SE variants) has a stacked logic board. It's really two separate boards sandwiched together.
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The unfortunate part is that the sensor in your panic points to an issue with the logic board. The x400 sensor is specific to the iPhone 13 mini. The logic board for any iPhone X or new (save the XR and the 2020 and 2022 SE variants) has a stacked logic board. It's really two separate boards sandwiched together.
The x400 sensor is on the bottom board. Usually something like that would be caused by bend, or substantial drop. There could be a break in the connection between the boards, or an issue with the bottom board itself. That will require soldering and some very specialized tools to repair.
If the device is still under warranty, be sure to check with Apple. If it's not otherwise damaged, this should be covered.
There's a whole section on this panic on the [[iPhone Kernel Panics#Section_SMC_Panic_Assertion_Failed|iPhone Kernel Panics page|new_window=true]], but in summary, you're on the right track.
Panic Assertion failed is usually related to some sensor that isn't checking in with the System Management Controller (SMC).
The unfortunate part is that the sensor your panic points to an issue with the logic board. The x400 sensor is specific to the iPhone 13 mini. The logic board for any iPhone X or new (save the XR and the 2020 and 2022 SE variants) has a stacked logic board. It's really two separate boards sandwiched together.
The x400 sensor is on the bottom board. Usually something like that would be caused by bend, or substantial drop. There could be a break in the connection between the boards, or an issue with the bottom board itself. That will require soldering and some very specialized tools to repair.
If the device is still under warranty, be sure to check with Apple. If it's not otherwise damaged, this should be covered.