zlacker

>>skille+(OP)
I feel like the elephant in the room is that there's no phone battery that's going to stay useful in anywhere close to that time frame, and replacing phone batteries is usually a losing proposition. I've tried, several times. Fake, low-quality batteries are rampant (usually degrading within weeks), and genuine ones are prohibitively expensive -- usually a significant fraction of the cost of a new phone.

>>wheels+B7
According to https://support.apple.com/iphone/repair/battery-replacement battery replacement for the iPhone 6s which came out 7 years ago is $ 69.

>>g23208+lq
which is about what an iPhone 6s is worth. Repairing such an old phone is not worth it.

The sweet spot would be putting a new battery into a 3 year old phone to get another 3 years out of it.

>>Kepler+ls
Smartphones started hitting the same plateau of "good enough" performance that PCs hit years ago, where today's phone hardware is more than adequate for years to come. Going forward it would become more and more advantageous to keep old phones going by replacing the one consumable component. The biggest difference from PCs is that you're still locked into whatever OS the phone came with so when the OS gets artificially bloated there's little recourse, no lightweight OS that just works and can keep the phone going.

So 7 years of updates would be fine, maybe with one battery swap in the middle, as long as Google starts paying a bit of attention to their phones' quality assurance and control.