The list of what phones can do now goes on and on. Mobile banking, instant payments, video calls, video messages, and of course access to the Internet and--oh, yeah--calling features, makes them the one of the most important pieces of technology in our lives. And they are only going to become more ingrained in the way we manage our busy schedules, both at the office and at home.
Generational differences will play a role here. My parents hardly ever use their mobile phones, and when they do, it is simply for voice calls. I use my phone for everything when I am out of the house, from managing my schedule to listening to music and looking up information on the Internet. My youngest sister is never more than three feet from her phone, and is hooked into all kinds of social networking services that allow her to remain in touch with her friends via every avenue possible. Today's teens and tweens (pre-teens? what's the correct marketing slang these days?) will be tomorrow's power users. They are digital natives, growing up with digital technology as part of their upbringing. They will use their phones to do far more than Gen Xers or Boomers will.
At the rate mobile technology is advancing, mobile phones will truly be the computing and communication platform of the future (though why characters in science fiction movies never seem to have them is beyond me). I look forward to what new functionality the future will bring. Because as of yet, my mobile phone can't go to the fridge and get me a beer while I am watching TV.