I bought one of the philips wireless lights working on wifi or bluetooth, can't remember. It worked fine after 2 minutes of set-up, and then stopped working about 1-2 months in. The light still works with the regular switch, but I can't get the connection back whatever I try, to turn it on/off with my phone.

Definitely won't be coming back to this until 5 or 10 years to see if the tech has reliably moved.