Three years after release, support for Samsung Galaxy Note 9 is slowly shrinking† The smartphone was namely removed from the list of monthly updated devices. This means that security patches no longer come every month, but only every third.
Depending on age, Samsung offers monthly, quarterly, or semi-annual security updates for all smartphones. Typically, after three years, support drops from monthly to quarterly, and this is the case with the Galaxy Note 9. This also means, predictably, the device does not receive the update to Android 11, but only remains at 10.
The latest Galaxy Note 9 security patch was released in August, so you’ll have to wait until November for a new one. This quarterly update cycle lasts about a year: after which it transitions into a semi-annual cycle and after another year, support is officially discontinued.
With the future loss of the Galaxy Note 9 the series of the same name is moving more and more towards the disappearancea, since Samsung has probably decided to stop production of the Note series. However, there is still a lot of time left and for Note 9 owners there is certainly no rush to make the switch to another smartphone.