Modern smartphones seem to be a step backwards across the board in this regard compared to laptops. Pretty much all laptops have been able to do this across all

Modern smartphones seem to be a step backwards across the board in this regard compared to laptops. Pretty much all laptops have been able to do this across all OSes for well over a decade, probably closer to two. Smartphones almost universally hide battery health information from the user, even though they presumably have some way to monitor it.