People are doing all kinds of things on their phones, including applying for jobs and getting government services.
The only thing I think Jobs might have been wrong on is the mix. The smartphone has become so powerful that the mix of smartphones to tablets is probably not what be predicted.
I have two young kids at home, so I am doing stuff all the time on my phone. I can use my iPhone to check in on work while giving them a bath or watching them play outside and can give feedback to my team. Our mobile tools have become so powerful that you can get a lot done on them. I have a 5K iMac with 72 GB of ram, but I spend most of my days on a phone or a tablet.
There are now closing in to 4B Smartphone users, and about 1B Tablet users.
PC usage isn't really shrinking, Office, Gaming and Productivity are still holding up. But most "consumer" usage has definitely shifted to Post PC.
Years later, the same kind of slowdown happened with tablets (especially Android tablets which are basically dead, but iPad wasn't completely spared either), and will eventually happen with smartphones as well.
The "we are now in a post-PC era" hype of 2010 (after the iPad's release) has eventually led to many "tablets are dead" articles by 2016.
I don't know how long I'll be able to run that server for before needing to upgrade something, but I suspect its lifetime is until something catastrophically fails.
For Web browsing and office work it works flawlessly. One day I'll throw in a cheap SATA SSD that I'll find on sale as the OS drive and it'll be good for even more years.
The only exception that I can come up with right away is drawing, but even taking pictures, well my phone doesn't hold a candle to my DLSR.
I guess it didn't quite work out that way.
And of course they're crap on PC (Electron).
Price of progress I suppose.
Just take a look at countries like Africa or Cambodia: Most of the people (if not all) own a smartphone and there is a lot of places where you will have a hard time finding a computer.
I tried to use a tablet for work when traveling but it did not take long to spot the drawbacks and buy a real computer to do serious work.
The mobile ecosystems force us to do this because they stop us from unleashing the full potential of these tiny computers.
Imagine something like an iPad that would allow the user to just install any software that this tiny computer can run. Also you should be able to copy and access files from/to any other location on the filesystem. I could use it for most of my daily tasks at work if iOS/iPadOS would not prevent me from using the tablet in that way.
And I'm thankful every day that he was so wrong. Even though there are bad faith actors encircling the world of electronics and software attempting to turn everything into a walled garden (and succeeding in many cases), the PC lives. Hurrah.
On top of that his analogy makes no sense. By no means were all early cars trucks. Automobiles in cities didn't even really exist in any considerable number until after WWII and the suburban housing boom enabled by exclusionary FHA housing subsidies.
Before cars we all rode the streetcar and train. Open systems that allowed mobility without placing a premium on using your own two feet.