None of us asked for the iPhone. Just 20 years ago, we were all happy using our mobile phones simply to make calls and send text messages, blissfully unaware of their untapped potential. Fast forward to the present day, and the smartphone is now integral to the functioning of our day-to-day lives. Apple did what all long-standing, successful businesses should do: they anticipated what we, the customer, would want and need before we even realised it ourselves. It was, after…