When Apple introduced the iPhone, it changed the mobile landscape in a big way, but while many customers may claim that the phone changed their lives, it did the same for carrier AT&T. As Forbes reports, the once AT&T-exclusive Apple smartphone completely changed the company and forced it to adapt to a booming market that it wasn't prepared for.
"It changed our capital allocation. It changed how we thought about spectrum. It changed how we thought about engineering and designing networks," AT&T CEO Randall Stephenson told Forbes, "Suddenly you go from thinking that 40,000 cell sites are sufficient to thinking it's goi
