>This is ignoring the fact that the main reason retired phones are e-waste is proprietary firmware blobs and locked-down systems preventing users from maintaining their phone with security updates, and very limited support length from OEM's leads to VERY insecure devices after they drop out of support.

Approximately nobody is throwing away phones because the OEM stopped providing security patches. They're doing it for more practical reasons, like the phone getting slow, the battery wearing out, or wanting a better camera.

Moreover being able to replace firmware blobs/kernels/whatever doesn't mean such updates will actually materialize. For lineageos, many phones are stuck on 22.2 (android 15) because android 16 requires linux 5.4 and above, which means phones with earlier kernels are out of luck. Prior to this, there were phones from as early as 2016 (eg. the original Pixel) that could be upgraded to the latest Android. This isn't a "firmware blobs" or "locked down systems" problem. The kernel sources are available, and the kernel can be replaced, but nobody is going to bother upgrading the kernel for a 10 year old phone.

https://lineageos.org/Changelog-30/#legacy-devices

>You should not be connecting these old devices to an internet accessible network.

This depends on the use case. If you're using this as some sort of NAS or compute cluster running trusted workloads, you should be fine as long as there isn't some sort of RCE in the kernel.

> Approximately nobody is throwing away phones because the OEM stopped providing security patches.

I thought that, but a surprising number of people think that no support means that their device becomes vulnerable on the very next day. Not all of them act upon it but that seems to be the understanding of people who know what a security update is (not my grandma, but my mom for example) but aren't real techies or just not in this area. And it's not like these people are installing non-OEM patches! Nice as that would be...

Some time before and during covid, I feel like security update awareness became a lot more mainstream. Maybe because there's not much else to talk about in smartphones anymore anyway, so you shift from "ooh this fancy new one has a fingerprint reader in the power button and its notification LED on the back!" to "I don't want a new one; which one can I use for the most amount of years to avoid this hassle"

Probably also a culture thing. I guess most people in low- and middle-income countries have other worries; I'm speaking from a northwestern european viewpoint

> Approximately nobody is throwing away phones because the OEM stopped providing security patches.

This becomes a practical reason more quickly than you think. If a company only provides 4 years of security updates and they only provide 2 android MV releases, you quickly become out of date. I had a BlackBerry Key2 that I bought in 2018, I had to replace it in 2024 and I was really holding onto it despite a lot of practical problems - Slack dropped support for the version of Android a year earlier, it was only when I tried to install Google Wallet and could not that I finally decided despite the hardware and software functioning fine it really wasn't practical to use a device that was stuck on such an old version of Android. (I would've tried to figure out the kernel myself if the bootloader wasn't locked.)

But that's feature updates, not security updates? If the manufacturer kept providing security patches for your old Android version, it wouldn't have helped you install Slack and Wallet.

Phones don't actually get slower, or, they shouldn't, if they are reasonably well maintained. A battery swap might be necessary to preserve battery life under load. A NAND might start going bad.

Apple just shipped iOS 27, which has support for 2019's iPhone 11. So we are around 7 years there. It's probably fine for many people's use!

For a task like openclaw or hermes, or even something more aggressively graphical & GUI, it's not hard to imagine an 8 year old phone doing fine.

> Phones don't actually get slower, or, they shouldn't, if they are reasonably well maintained.

Relative to ever rising hw requirements of apps they obviously get slower. That is why I personally buy new phones.

Have you ever owned an older phone or older computer in general? Whether hardware or software caused, they get slower.

Only if the software gets slower. My 2015 MacBook Air is slow with the latest supported macOS but runs Linux super snappy for the same tasks.

Unless the thermal paste goes bad and the fans get clogged and you get thermally throttled.

Battery swaps usually don't work very well, unfortunately.

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