In my experience, older Android phones can be fairly useful. There are some great audio recording & guitar tuning apps which work offline, making the devices ha

In my experience, older Android phones can be fairly useful. There are some great audio recording & guitar tuning apps which work offline, making the devices handy for capturing musical ideas. Keeping the devices in airplane mode dramatically increases their battery life. Additionally, if you want to bust out a dedicated charger, they can act as IP cameras. Great for watching your motorcycle when it's parked outside in a city. Here's a KickStarter which aims to use old Android devices to passively collect audio in rainforests, with the aim of halting illegal logging. [1] TLDR: If people choose to write software for these devices, they can remain useful for a long time. [1] https://www.kickstarter.com/projects/topherwhite/rainforest-connection-phones-turned-to-forest-guar https://www.kickstarter.com/projects/topherwhite/rainforest-...