An iPhone would be a very minor expense for a person from middle class (lawyers, doctors, sofware engineers…).
I imagine for working class or poor people Android vs iPhone could be a real concern financial though.
But a regular software dev or a GP is the perfect representation of a middle class - having enough money for comfortable life, travel, owning a house, new car, leisure activities and having money for investments.
If one can’t afford these (all at the same time) - it is not middle class. Middle class is not a “median - average salary class”, by a long shot.
Can you define "upper middle class" and "upper class" in a way that excludes all but "some of the most successful" doctors, lawyers, and software engineers? Because I sure can't.