Xiaomi POCOPHONE F1 will be supported by the next release of Auditor:
github.com/AndroidHardeni
To help expand device support to more Android 8+ devices, install it from Play (play.google.com/store/apps/det) or GitHub (github.com/AndroidHardeni) and use 'Submit sample data' in the menu.
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One valid sample for each device model is published at github.com/AndroidHardeni under a CC0 license to make them available for use by other projects using key attestation. Samples need to be from the stock OS with the bootloader locked to be usable for expanding device support.
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The devices need to have been *launched* with Android 8+ to have hardware support for key attestation. The app will disable the 'Submit sample data' option on devices that were only *upgraded* to Android 8+, at least if they're CTS compliant and set ro.product.first_api_level.