Almost everyone I know has an old smartphone in a drawer. Often these are Android 4 or Android 5 phones that have broken screens, worn-out batteries or were just disposed of as a newer model was bought.
But I find myself buying RPi's to make piholes for peoples homes...
Would it be possible to repurpose old phone hardware instead? With the two benefits that:
a. it has a build in UPS to survive (short) poweroutages
b. when wallmounted; the screen could be used to display stats on the current LAN and ads.
c. it is good for the environment to reuse old electronics!
Are there here people with some experience who could chip in with ideas about the (im)possibilities of a project like this?