I personally think there is some fallacy in thinking "Why would someone carry another electronic device when their are smartphones that already facilitate Bitcoin transactions?"

Wish i could remember which one it was called tho.... http://en.wikipedia.org/wiki/List_of_fallacies


Seriously tho if you really trust that all smartphone manufactures are not hiding packets of data that send statistical usage and data behind your back(without your consent) then please continue to use the smartphones to trust your money with it.

 I know for a fact that after seeing all these hackings with Bitcoins I guarantee their will be businesses(more like scammers) in the future that their sole purposes is to sell cheap smartphones with some (mischievously-altered) open source operating system preloaded on it that will send your private keys to the server and the worst part of it all is that they will encrypt the data so you don't even know what they are sending and those businesses will succeed from selling private keys to other companies and of course on top of selling smart phones to all those who think that fallacy above is true. -- That is all.

Ps. Heck in the future when Bitcoins hits masspopulation/mainstream their will be college kids saying "Hey bro you wanna make some money?", "Sure how?", "lets sell our (altered)phones to innocent people and when they receive Bitcoins on their smartphone they will be automatically sent to us instead"