What if I put a basic phone sim card to an unlocked iPhone?
I have a basic phone which can only call (I pay about $10 a month for this). But now I have an unlocked iPhone 5s, which I use for music.
So I thought, why not put the sim card in the iPhone so I don't have to carry 2 phones. I DON'T want to have to pay for data. So, if I put the "basic phone" sim card in the iPhone, will it automatically charge me for the monthly data? Like $40-80 a month? (AT&T)