My submission for your review and consideration. I much prefer to develop wordmarks simply because word marks have more appeal are more creative and are easily remember over a random abstract. The design incorporates a familiar abstract face utilizing a voice set.
Nice - in #12, let's swap green to some other color. No greens and yellows. i like the way the ends of the voice set are different color (black) in #8.
No not wifi - you're absolutely on the right track. Just ignore my comment until I can articulate it better ;-)