Comment by a96

You can take many computers from 1999 and update them to the best software available today. Most phones won't even do that for a few years. And that is security in the real sense of the word, as in "this won't just pull the rug from under me".

(Of course the problem isn't Android, it's the chipset vendors that the SW depends on. They drop support fast and never give enough info for anyone else to keep things up to date. Also Google.)