All Android TV devices come with a remote control, but those things do have a way of getting lost in the couch cushions. Luckily, your phone can connect to the TV box and act as a remote. Not as luckily, that can sometimes be buggy. Maybe it'll be a little less so going forward now that the remote service is being updated via the Play Store.
The Android TV Remote Service is distinct from the Android TV Remote app, which is installed on your Android phones and tablets.Read More
Android TV Remote Service now updated through the Play Store was written by the awesome team at Android Police.