It looks like the Pixel 4 has the same terrible oleophobic screen coating as other Pixels | Android Central
What are these two spots? They don't go away no matter what I do. This is a S21 base purchased in September (USA). Is it the oleophobic coating? Doesn't feel rough to
S9 Plus screen coating worn out after 3 weeks - Samsung Members
Missing patch of oleophobic coating? | MacRumors Forums
Oleophobic coating – what it is, how to clean your phone, what to do if the coating wears off - PhoneArena
The Pixel 2 XL's oleophobic coating is pretty terrible | TechSpot
Oleophobic coating – what it is, how to clean your phone, what to do if the coating wears off - PhoneArena