Batteries have to be replaced once in a while, thus the famous story about iphones slowing down as the batteries get weaker. Maybe your parents were lucky or maybe their phones slowed down without their noticing it, or maybe the phones already had replacement batteries when your parents got them? Apple took a significant financial hit the year they offered $29.95 battery replacement since people got their batteries replaced instead of buying new phones that year.

I have a family member with an iphone se (2016 model) and it has needed a battery replacement. No big deal with the ifixit kit. But it seems to me, phones with wireless charging seem to have harder to replace batteries a lot of the time. The Pixel 2 is notoriously difficult. So I'll wait to see what happens with the 6. Of course I'm even more interested in a 6a, if they make one of those. I'm enough of a throwback to still want to use wired headphones.