[Q] Limited App storage space

Dear All,

I have updated my note to the official 4.1.2 rom.
However I have found that my app storage space is only 2 GB.
Even though i have a 16gb phone model.

This is way to little for me as I want to install rather large games.
Could someone please advice me on how to be able to increase my app storage?

Kind Regards,

Caleb