The TouchID sensor on my iPhone 7+ always seems to be covered in a greasy fingerprint, even though my hands are clean. I wash my hands frequently throughout the day (germaphobe), but every time I use the touchID sensor, it just leaves a greasy fingerprint. It used to be solved with a simple wipe with a microfiber cloth, but now, it seems like it takes a vigorous rubbing with that microfiber to remove the fingerprint. So every time I want to log in now, I have to clean my fingerprint sensor. Is there any way to re-coat the oleophobic coating? Was the touchID sensor coated before?