This.<p>Not only that, but the number of spare smartphones is steadily increasing. Barring impact damage, the hardware generally lasts longer than the period of time a consumer is satisfied before wanting something newer.<p>But older devices are also increasingly left out in the cold with software updates. Anything that can&#x27;t run the latest OS release will miss out on a portion of apps. Anything that&#x27;s more than one OS release old will miss out on <i>most</i> of the apps. Three OS releases? You&#x27;ll be able to run what came with the OS and a bare handful of carefully backward compatible (or all but abandoned) apps, maybe.<p>So... there&#x27;s an increasing amount of old devices that could really use something else to run on them.