For me, it is a funny comparison. It is hard to hold such a comparison but it is good in the sense of showing the vast growing of this device.
And fewer teens are wearing watches now because they use their phones to tell time instead
The phone that you have in your pocket, pack, or handbag is probably ten times more powerful than the PC you had on your desk only 8 or 9 years ago (assuming you even had a PC; most mobile users never have).
Your phone will be smart about your situation and alert you when something needs your attention.
Your phone uses its arsenal of sensors to understand your situation and provide you information that might be useful.
Your phone is your omnipresent microphone to the world, a way to publish pictures, emails, texts, Twitters, and blog entries.
If you take that intelligence and combine it in the cloud with that of every other phone, we have an incredible snapshot of what is going on in the world right now.
in southern India, fishermen use text messaging to find the best markets for their daily catch, in South Africa, sugar farmers can receive text messages advising them on how much to irrigate their crops, and throughout sub-Saharan Africa entrepreneurs with mobile phones become phone operators, bringing communications to their villages. These innovations will only increase in the future, as mobile phones become the linchpin for greater economic development.
Trust is the most important currency in the always connected world, and your phone will help you stay in control of your information. You may choose to share nothing at all (the default mode), or just share certain things with certain people -- your circle of trusted friends and family. You'll make these decisions based on information you get from the service and software providers, and the collective ratings of the community as well. Your phone is like your trusted valet: it knows a lot about you, and won't disclose an iota of it without your OK.