If we are sharing anecdotes, my wife and I got iphone xrs same Xmas. She regularly fully discharged hers, whereas I charged mine throughout the day. My phone ve

If we are sharing anecdotes, my wife and I got iphone xrs same Xmas. She regularly fully discharged hers, whereas I charged mine throughout the day. My phone very very rarely goes below 40 or even 50 percent. After couple of years, her battery life was awful and mine was fine. Basically, I find individual stories vary, but statistics may show overall trends