Smartphone for sure. It's a telephone AND it's $800. I don't know how the world got by without.
Yep, how did the world survive without the ability to play Angry Birds, tweet useless hashtags, post photos of everything they do on Instagram and post about everything they do on Facebook.
I would venture a guess that 99% of smart phone users never use their phone for research or to learn, but it's the ability to play video games and visit useless social media sites.
Of course listen to music because you weren't able to do that before smartphones
