In summary, since you too probably own an iPhone and no longer need anything else in your life:
What? No shoutout to the payphone? For kicks sometime, try to work the idea of a payphone into conversation with someone under 18 years old. The blank look they get is priceless. Remember being in latch key and calling your parents collect to come pick you up, only they'd deny the call without having to pay? Sometimes older is still better. Now, everyone (including children, which still seems ridiculous to me) has $200 monthly cell phone bills to replace gadgets that cost a fraction of that price and they didn't have any monthly charges. No wonder the economy is in the toilet!
Why are calculators in the photo for the article, but yet not on the list? Do cell phones calculate derivatives and I don't know it?