Using External IP as LHOST

Hey there,

I was asking, I have a kali linux verison my laptop, I need to try penetrating an android phone with MetaSpolit, I saw many methods and they are the same by creating an APK file and sending it to the victim using msconsle but I was wondering, The android phone I am trying to hack must be connected to my own internet connection (Local Host) or it doesn't matter?

I mean I need to make a WAN Connection instead of doing it on LAN because my victim isn't connected to the same network.

Should I port-forward 4444/80 ports & then add in LHOST space my external ip or the kali internal ip?