> If you stood on the street corner and asked every passerby what they would change about their phone, I think you would be there all day before someone said "I wish I could replace the battery".

I have experience saying the exact opposite, although this was a few years ago.

OnePlus set up a marketing booth on my campus in 2018 or 2019 or so, and they did exactly this, with a large sign asking people what they want out of a phone. They asked passerbys what they want out of a phone, and they let people put their requests on a board.

When I put my request up, I wasn't the first one to request replaceable batteries and a headphone jack. (At the time, OnePlus had removed the jack from their most recent phone, after advertising their previous phone in comparison to Apple's jackless phone).