Quoting ♥ Monkey:" My best friend is stationed in Japan and has an app on his phone (he bought it in Japan) called HeyWire. I'm in the States. Will Verizon charge me for overseas texting?"
Quoting Jerri _:" No. We use similar apps to text out family and friends in the us. It assigns us a us #...so no charge to them. It's a normal text for them but all through the app for us."