I have two of the Ruku Stick drives (Model #3500) and they are prone to overheating. Generally they drop the signal every hour. Very irritating.
They are somewhere in a drawer around here.
Junk, IMO.
I have 10 Roku sticks with a cumulative 30 years on them and have not had a problem with any. I have this many because I have lots of grandkids who have yet to mangle one. And FWIW Roku has an app that works on cell phone or tablet.