@Mark Wills
Sheesh, progress - who'd have it eh?
It's called a MOBILE phone because people didn't want to find a BT line every-time they wanted to speak to someone. It's also a PERSONAL device, unlike your landline that's a shared resource.
It took less that 15 years from Mobiles being launched to when the public decided they HAD to have one, and people talk far more now on mobiles than they ever did on PSTN only.
Now we have a thing called the INTERNET. 15 years ago it appeared and now with broadband and social networking etc, people have to have it. It too is moving from being a household resource to being a personal resource (multiple PCs per household, increasingly being laptops). Mobile Television, trick subject but hey, you never see a family car on the motorway without a couple of 7" screens in the back so, no, people can't wait to get home to watch video.
Put the 2 things together and you see that people want an internet that's personal to them, and they want it wherever they are. Laptops are getting smaller, but I still can't seem to get one in my coat pocket.
Mines the steam-powered one with the ludd-carrying red-flag waver walking in front!