I'd like to point out that many of us use an all-in-one device that is very complex for transportation. Just because something is all-in-one doesn't mean that if something goes wrong with it the whole thing has to be thrown out or anything. Parts of all-in-one devices can be fixed.

Skype exists now, and if there was universal wireless, the N8xx devices could be used for phones everywhere right now. You would always be free to carry as many cell phones with you as you chose in addition to your all-in-one device.