I've never had much luck with these things. Maybe its because I am a trademan and as such my fingers are often rough or dirty. Sure I've done all the usual, enroll different fingers, do the same finger several times but can't say it helps. I have tried Huawei and Samsung, Samsung are the worst. On my S10+ it works roughly 1 out of every 4 attempts. I really miss the bog standard finger print readers, never fail or let me down.