My argument was that the expectations are maybe too high, asking for a "a smartphone that can last a whole day without charging", but using it 1/3+ day. For me

My argument was that the expectations are maybe too high, asking for a "a smartphone that can last a whole day without charging", but using it 1/3+ day. For me that is like saying "When can we have a car that drives 2000km? It usually stops for me after 1000km."