holy fuck 20 dollars isn't that much just go buy the game instead of playing on that digital shit stain on your phone that you call an emulator
Except you support nintendingus by playing it on a DS. Plus, phone emulation drains battery terribly and has a dumb interface in my opinion.
That's impossible, unless you keep it on a charger, having your phone on drains the battery. If it dies there's no emergency callerinos.
My phone gives a warning @ 1%, 5%, 9% and 14%. Also, if my phone is on sleep (not off), the battery will drain 2% max.