Almost five years ago I got a OnePlus Two when it was released and about the same time my then work gave me a new iPhone 6 (unrequested by me, and when they app

Almost five years ago I got a OnePlus Two when it was released and about the same time my then work gave me a new iPhone 6 (unrequested by me, and when they appeared they told me I had to take it). I still use that OP2 as my daily driver, now with LineageOS 17.1 (Android 10, the current version) installed on it. It's not blazing fast but the battery is at 80% capacity and it otherwise works well (and has a 3.5mm jack). This obviously is the enthusiast option, but the first OnePlus had Cyanogenmod as the factory installed OS on there. If their relationship had continued and Cyanogen hadn't imploded it's quite possible that the OP2 would have the latest build on there officially as LineageOS is what Cyanogen became. Unfortunately there are no builds of 17 for the OP1. That iPhone of the same vintage? I gladly gave it back when it was stuck on the then just-outdated iOS 12 and there wasn't much of an obvious future for it.