I'm sitting here trying to imagine a 5" tablet or phone in my pocket. It'll fit. I wear generally pretty baggy pants and when I do wear jeans, well, they should be fine as well. However, I definitely don't see myself holding up a 5" device to the side of head to carry on a conversation with someone.
This line of thought started yesterday when we heard news of the 5.3" Galaxy Note from Samsung. I've already a few things I didn't like about it, specifically, it ran Android version of the OS rather than the tablet version, Honeycomb.
That aside, it looks like a winner if people wanted to use it as a tablet. I reckon Samsung will probably look into releasing a model that is Wi-Fi only. My hope is if there is ever such a device, it would work more as a tablet than a phone, hence, installed with a tablet OS.
I see people who would buy this device or the Note using headsets or Bluetooth devices instead. Unless you're really big and tall and have a big head. I've got an average sized head so if I could buy such a device here in the