Samsung's Galaxy Upcycling turns old phones into IoT devices - Engadget
A few years ago, Samsung announced a sustainability initiative called "Galaxy Upcycling," an effort to repurpose and reuse older smartphones. At its core, the idea is to let people who still own older Galaxy smartphones to use them as part of their connected home rather than just leave them in...
Samsung has made moves to introduce software you can install on older Galaxy devices so they can be used for matters of IoT.
I think Google should make this universal to their Android platform!