2018 is all about the display, and the notch has now become a staple in many smartphones. We have not seen more than one notch on a smartphone yet, but it seems like Google thinks the day is not far and has imposed some ground rules for notches.
Android UI product manager Megan Potoski wrote on a blog post for developers yesterday, that Google is working on a mandate for Android P. According to the mandate, Android P phones cannot have more than two cutouts on a device. Only one notch is allowed per side and notches are only allowed on the top and bottom edges, not on the left or the right.
The point here is to make sure that all apps display properly irrespective of the device. While some apps natively support it, some do not. Android P includes controls to let apps choose whether they want to make use of the notch or not. While we have not yet seen a multi-notched smartphone, there is a possibility that phone makers make one with two or even three notches (not sure if that’s the greatest of ideas, but you never know). The notch is a perfect example of a design method that took off overnight and is now a staple.