I have to disagree wholeheartedly. The open source android community has kept my android phones going for years after google/the oem stopped supporting them. Meanwhile, everyone knows that if you update your iPhone to the latest version you run the risk of it running dramatically slower or with worse battery life. And there's no such thing as open source iOS. Apple is the king of planned obsolescence. Google isn't any better, but if you know what you're doing you're never locked in.