HOUSTON—When the iPhone first entered the world five years ago, it was as if Apple had reinvented the wheel.
"iPhone is like having your life in your pocket," Steve Jobs said at the time. "It is the ultimate digital device."
It set the standard in smart phones and over the years, changed human behavior.
"De-cluttered people’s lives," Houston life coach Kachelle Kelly said.
Kelly said she has seen her clients use apps to lose weight, run races and even get better sleep.
But what will they think of next?
Houston tech guru Ashley Small said it is possible that smart phones could one day replace money.
"Research shows that by 2020 the iPhone is going to replace cash and credit cards completely," Small said.
Many consumers say their smart phones are already a "need."
"It is really hard to imagine not having them," said iPhone owner Stephen Bond.
The iPhone has amassed $150 billion in sales. That number will likely rise later this year when the next generation is unveiled.