The virtual keyboard hasn’t really changed since Jolla 1 phone.
To select numbers, we have to switch to alphanumeric mode before reaching them. It is a bit painful especially for passwords or some messages because those characters are often used in this context.
A lot of Android devices provide those characters in a dedicated line on top of the virtual keyboard, just below suggestion bar. It is more convenient to use them from my point of view, and recent devices have a bigger screen so it wouldn’t reduce too much the size of the displayed application.
Eventually, it can be enabled via a setting.