As long as we're offering opinions on the iPhone's killer feature, mine is that it was access to desktop web sites.
Remember WAP[1] and WML[2], the HTTP and HTML substitutes for mobile phones too anemic/limited to support the real thing? Back then, many web sites simply didn't support access from a mobile device. (It's the polar opposite of "mobile first" or "mobile only".) A few did, but many just tossed up an error page.
With the iPhone, Apple put together all the key ingredients to be able to say, if you're on the go and suddenly need to access your bank's web site to check your balance or whatever, you will be able to, even if your bank doesn't support mobile devices. The experience may not be great, but it will at least be possible.
Those key ingredients included a big screen, a fast enough processor and large enough RAM to handle pages that were somewhat bloated, a browser that supported enough (JS, etc.) to make most pages work, and special features for making the most of desktop-oriented pages by zooming in on text. To some extent, Apple brought these key ingredients together by designing it that way, but they also did it by not entering the market until powerful enough hardware was available.
The iPhone flipped mobile web access on its head. Instead of implementing whatever was convenient and punting on 50+% of the web, leaving users at the mercy of web sites to decide if mobile access was worth it to them, Apple created a device and browser that took responsibility for doing anything and everything it could to make sites work.
The web is a killer feature for the internet, and getting meaningful access to the web was a killer feature for internet-connected mobile devices. Paradoxically, it worked so well that the platform was enormously successful and it became essential to offer mobile web support.
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[1] https://en.wikipedia.org/wiki/Wireless_Application_Protocol
[2] https://en.wikipedia.org/wiki/Wireless_Markup_Language
Remember WAP[1] and WML[2], the HTTP and HTML substitutes for mobile phones too anemic/limited to support the real thing? Back then, many web sites simply didn't support access from a mobile device. (It's the polar opposite of "mobile first" or "mobile only".) A few did, but many just tossed up an error page.
With the iPhone, Apple put together all the key ingredients to be able to say, if you're on the go and suddenly need to access your bank's web site to check your balance or whatever, you will be able to, even if your bank doesn't support mobile devices. The experience may not be great, but it will at least be possible.
Those key ingredients included a big screen, a fast enough processor and large enough RAM to handle pages that were somewhat bloated, a browser that supported enough (JS, etc.) to make most pages work, and special features for making the most of desktop-oriented pages by zooming in on text. To some extent, Apple brought these key ingredients together by designing it that way, but they also did it by not entering the market until powerful enough hardware was available.
The iPhone flipped mobile web access on its head. Instead of implementing whatever was convenient and punting on 50+% of the web, leaving users at the mercy of web sites to decide if mobile access was worth it to them, Apple created a device and browser that took responsibility for doing anything and everything it could to make sites work.
The web is a killer feature for the internet, and getting meaningful access to the web was a killer feature for internet-connected mobile devices. Paradoxically, it worked so well that the platform was enormously successful and it became essential to offer mobile web support.
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[1] https://en.wikipedia.org/wiki/Wireless_Application_Protocol [2] https://en.wikipedia.org/wiki/Wireless_Markup_Language