I'm sure that is exactly why it doesn't have a cellular radio either.

This whole concept reminds me of the ill fated Palm Folio which never even made it to market. The difference being that the Folio offered a much larger screen for your Treo phone whereas this device just offers, well actually nothing much... Oh look, for $300 I don't have to pull out my phone to see who called, texted, or emailed me.