One third of that spending was in the Asia-Pacific region.
Findings from an Interactive Advertising Bureau (IAB) analysis has shown that the worldwide mobile marketing spending last year was $5.3 billion
31.4 percent ($1.7 billion) was spent on advertising in North America.
The complete study was conducted by the IAB Mobile Marketing Center of Excellence, in conjunction with the HIS Screen Digest, and the IAB Europe. The purpose of the research was to try to determine how big the smartphone and tablet advertising marketplace truly was, both globally, as well as in the various regions around the world.