The company will be previewing its Flash Player 10 for smartphones at this week's Mobile World Congress in Barcelona, the industry's biggest annual gathering.

So, for this review, we will be comparing mobile smartphone operating systems, which to say the least, are quite similar to each other no matter which phone you go with.

In the study, researchers measured the brain activity of 47 participants who had pairs of Samsung cell phones strapped to their heads, one on each side.