The oleophobic coating last for a couple hours before it stops working.
I have applied more than 10 coatings at this point always leaving the phone unused over the night to allow the coating to cure. Tilting the phone after putting a droplet of water on the glass makes the droplet roll on the screen without leaving traces as it should. Repeat the process at the end of the day and the droplet leaves a trail on the screen indicating the coating is gone.
As for the oleophobic part. It too last for half a day. The next day the screen looks like someone ate a greasy pizza right of the glass.
Also instructions are only in Japanese so I had to google for instructions how to apply the coating.
Basically this product is a scam.