Apple didn't actually invent touch-based smartphones. Google Maps was a huge leap over the competition of the time. I'm pretty sure it was the first to allow

Apple didn't actually invent touch-based smartphones. Google Maps was a huge leap over the competition of the time. I'm pretty sure it was the first to allow pan/zoom of the map by dragging, dynamically loading of tiles as needed with XMLHttpRequest. All websites up until then had pan/zoom buttons that would completely reload the website.