
If you use Samsung SmartThings for your smart home tech, you use one of your old phones as a sensor for that tech. Using an app called Samsung Upcycle, users can turn an older Galaxy phone into a light sensor, sound sensor, or both. To set up a Samsung phone as an upcycled sensor, you need a Galaxy-branded Samsung smartphone from 2018 or newer, that's the Galaxy S9. Both phones need SmartThings and the latest software updates installed. So here's how to do it!