Iphone 1 was a collosal PoC. Slow, most of web didnt work. Its only appeal was the full touchscreen, which of course sucked to type on, but looked cool (which is the reason people bought it mostly). Everyone that needed mobile compute functionality was still on Blackberry and some other devices.
There was a time during early 2010s where the iphone was better than everything else due to native hardware and in house software and updated functionality. However by 2016 Android caught up, and since the first Pixel came out it pretty much has been ahead ever since.