Q: My wife and I both have iPhones, although hers doesn’t actually have a plan on it – she basically just uses it over Wi-Fi when she’s at home. I’m wondering if there’s some way we can exchange text messages when I’m away from home. My iPhone has a normal voice plan, but I don’t pay for data as I’m near Wi-Fi often enough. I tried sending a text from her iPhone to mine, but it seems to shows up on both…