Google Pixel 3 XL

=Solutions=

=Repair Warning= It appears that any replacement of components, for example the battery or Fingerprint Sensor will result in the Biometrics (including the Pixel Imprint Fingerprint security capability) being permanently disabled. As yet no way is knows to re-enable it.

Identifying the issue

 * No warnings will be shown on the phone, and the phone will operate normally.
 * Except anything requiring biometrics failing back to alternate authentication options.
 * The Imprint Fingerprint and Biometrics options will no longer appear in the settings menu.
 * The ability to enrol fingerprints during initial configuration and subsequent usage of the phone is missing.

Recovery Approach
The following has been attempted to recover the Imprint fingerprint options, so far with no success.
 * Standard Factory Reset
 * Forced Factory Reset
 * Web-based re-flashing of phone
 * Full wipe, and full reset of partitions
 * Standard Image Reloading (Android 11 and 12)
 * Installing Android 10 manually
 * Installing Android 11 manually
 * Installing Android 12 manually
 * Replacing the fingerprint sensor
 * Replacing the battery
 * Reinstalling the original battery