I'm just frustrated upon this issue. I just bought galaxy m31 two weeks ago,and since then i'm facing this issue, whenever i lock my phone and leave it for sometime, fingerprint unlock doesn't work. However when i open the lock screen by pressing lock button then fingerprint works well. My best guess is I think the fingerprint scanner is being disbaled or being put to sleep whenever the phone is in idle. I'm just too much annoyed by this now. This is my 1st samsung phone,i was using other brands earlier,but this time i chose to go with samsung, now i've Statred to feel like it was a BAD BAD decision. Annoyed beyond words!! What's the point of having a fingerprint unlock feature if I have to press the lock button every time to activate the fingerprint sensor??????
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