@Christopher Leach, I'll tell you my experience and why I had a Holy Shit moment with the iPhone.

I'd had plenty of 'smart phones' before the iPhone came out, they were okay but I didn't use the 'smart' aspects of them very much because they weren't going to transform my life & honestly they weren't that good.

When the iPhone came out, I disregarded it as yet another smart phone.

Some time later, I finally payed attention to the iPhone and had a massive Holy Shit moment because for the first time I realised I was going to have a miniturised computer in my pocket that could make phone calls whereas before then it was a somewhat advanced phone.

The distinction might seem small but it blew my mind.