Hello,
I find that fingerprint unlocking on graphene os is very random.
On other ROMs (eg calyx os, lineage, ...) that I have been able to test, unlocking works much better.
Do you have the same problem?
Thanks

    luc18 Do you have the same problem?

    No, but if you're using a screen protector, try enabling "Increase touch sensitivity" in Settings > Display > scroll down

      Thanks for the advice but the option is already enabled.
      The sensitivity of the fingerprint sensor remains much less good and precise than on other OS.
      I almost always log in with my PIN code.

        luc18 Have you tried removing the fingerprint and adding it again?

          Yes, I deleted my fingerprints and registered them again.

            luc18 All right, you seem to have tried various things. Might be useful if you could tell us which things you've tried? For instance, does the situation improve if you add the same finger as two or more additional fingerprints?

              I completely reset the phone. The fingerprint reader seems more responsive.