To market to consumers on their mobile phones effectively, you need to figure out how to convey your brand as a useful service. Brands that share common themes with cell phones -- mobility, convenience, instant gratification, timeliness, social connection -- have been quick to crack this code.

Let's take a look at a few verticals that are making it work.

Author notes:
Mike Baker is chief executive officer of mobile marketing company Enpocket. Read full bio.