Does Android TV remote always have a back button, or do some manufacturers do not include it? The reason I as is I am developing an app for it and want to decide to include a back button in UI or not.
Two major Android TV boxes I know of are Nvidia Shield TV (which I use) and Xiaomi Mi Box. By checking the remote control of my Nvidia Shield there is a back button. Looking at images of the remotes of other Android TV boxes such as Ematic Jetstream, these also have an independent back button on the remote control.
It appears most if not all Android TV box manufacturers include a back button on their remote controls.