In Tokyo, mobile phone carrier NTT Docomo just unveiled a huge yellow warning plastered all over a Shinjuku Station staircase. It reads, "Walking while using a smartphone is dangerous."

Apple has the personal assistant Siri. DoCoMo, a major mobile service provider in Japan, has the Syabette Concier. With the Japanese version of Siri being recently introduced, one man on YouTube tested the two voice controlled assistants to see how they differ.

And what if you have the 3G version? Well, things might get embarrassing.

This December, Sony is launching two PS Vitas. One model is the cheaper 3G model. The other is a 3G version.