I have a perfectly working network, a second gen Apple TV, but my iPhone and iPad based remotes no longer see it
AApple iPhone remote no longer sees Apple TV Network works
AApple iPhone remote no longer sees Apple TV Network works
Try restarting it
It sounds like your network might not work to me.
Try the following steps, check whether things are working after each step where appropriate, before trying the next.
I have a perfectly working network, a second gen Apple TV, but my iPhone and iPad based remotes no longer see it