Unfortunately, this is a feature we seem to have lost. It was implemented in early versions of the firmware, where one of the soft buttons down the left hand side of the screen took you to a 4-way page with a browser and 3 other device pages (I can't remember which ones). I'm sketchy on the details now, but I think it was only available on the default setup which comes pre-installed on the iPronto, and there was no way of customising it via iProntoEdit (but my memory may be wrong on that one). I didn't see many comments favouring it at the time, and I myself never used it. I suspect they got negative feedback about it, but whatever the reason, they took it out of later versions (I think about version 1.7 onwards) of the firmware.