I replaced a battery in my (quite aged now at 6 years) old mobile last month. The original one puffed up and damaged the case holding the mobile together, incidentally it tested as 100% good in capacity! Took about an hour to replace the battery with an aftermarket replacement, quite fiddly work involving pludgers and tiny screws, cost more than double the price of the battery just for the specialist tools to get into it.

I miss the days of that first google phone where I could just pop the back and replace the battery, I used it quite a bit with a second battery. My modern phone lasts a bit longer so its less of a concern but batteries are a consumable we know they age out faster than the devices themselves and they ought to have been replacable.

> I miss the days of that first google device where I could just pop the back and replace the battery,

1. That's not a "Google device", you mean a smartphone.

2. For a large fraction of the smartphones available today (probably also Google Pixel's), you can still pop the back and replace the battery. The popping may be a bit more complicated, but it's doable. Naturally there's a tradeoff between convenient ergonomics for battery replacement and smaller dimensions of the phone case.