there are many ways to do this, first: CHARGE YOUR PHONE FIRST (sorry that was a bit mean) and make the drone get commands from a server on a device it can call to (aka a opencomputers server rack) and you connect the phone to your computer, and (somehow) get it to give commands to the server, which then the server can relay the commands to the drone OR you can study the way ottomated made his computercraft robot remote controlled (although you may have to tweak it with CC and OC's differences in their built-in lua language)