How to put a HOLE in a hard plastic iphone case?

Long story short, the case doesn't have a hole where the iphone jack is, so I want to make one

Added (1). Device: Iphone 6

Try using a hand drill and then sandpapering the hole smooth.

Drill gun

Drill.

Best bet is to use a hammer & nail to make a small pilot dent, and then use a drill to make the actual hole. Would help to use a vice grip to hold the case