Okay, here's the situation. I have a friend in the USA. I live in Canada. We want to text eachother for free. I have an iPhone 4, she has a T-Mobile Prism. We both have unlimited texting. She does not have Data, I have 6 GB of Data (so using data for me in order to text her will be no problemo!) What can we do in order to text eachother for free? I thought that if I download one of those free texting apps, I could text her for free, but then I thought she may be charged long-distance to text me back at the texting app. So, what can we do? Thanks in advance to any answers!