I said the Switch was a console/handheld hybrid. The switch lite is a handheld. Let's be clear about what we both say and not try to mischaracterize each other's statements.
Your phone example is silly because it is not marketed as a gaming console or handheld. What handheld generation is my TI-84 calculator? I played games on it.
The TI-84 was not created primarily for games, and was not marketed as such. Smartphones, on the other hand, have been built with mobile games as one of their primary functions, and are marketed as such. I'm sure you've seen the commercials of people playing games on their iPhones and Android phones. The Samsung Galaxy Note 9 was designed with mobile games as a primary function (as are most high-end smartphones now). My old Nokia 6010 could play Snake. It wasn't designed primarily for games, but it could play them. It also wasn't marketed as a device for playing games. Since high-end smartphones are designed with mobile games as a primary function, and since they are marketed as gaming devices, the definition of handheld console applies to those smartphones.