Hi everyone, My sister is giving me her old iPhone 5. She sent it to me in the mail, and when I turned it on, it said there was no sim card. I'm planning on letting my daughter use this to play games and maybe for the occasional text. In other words, I don't want to set up a monthly plan for her with any of the mobile providers. We have a friend whose daughter uses her phone with wi-fi (she can call and text) and we would like to use this phone in the same way. Do we still have to buy a sim card in order to use it with wi-fi or is a sim card only if we have a provider like AT&T, etc...? Thank you in advance.