You can not play in local multiplayer

You can not play in local multiplayer. to connect the phone router to play in local multiplayer, the friend who is connected to my router can not find me. not i internet in home and i play in the server place, however not is being liable. I believe someone has reported this issue, but I would like to correct this problem soon.
please! I want to play without internet with my friends. that way no fun to play minecraft.