If you lose the back of your TV remote and you can't find it anywhere, do you leave the batteries exposed, slap some tape over them, or just try to replace the remote? ——— Well, to begin with I don't have a TV. But if I had a TV and I lost the back of my remote, I wouldn't worry about it. I have an app installed on my phone that can be used as a remote controller for lots of electronic devices that can be controlled with a remote.