earlier in oreo it causes hinders when there was sun lights now in pie it has the advantage of lift wake even I put the sunglasses it unlocks . however if there is too much light then it hinders . but it works for me 95% to time . but when tend to use the fingerprint unlock it never works for me . it never works when it try to register same finger 4 times . even though it not works for me
the finger print damages over time but the iris remains . it only damages when you have the power glasses or you have the problem related with your eyes
however it is less inconvenient for those people who tend to use the phone on flat surface but most of the time people use phone in a tilted manner so iris is better way to unlock a phone because we use phone tilted towards face .
