Hello everyone, I have a few questions for my situation. I'm going to travel to South Korea for a week and need to charge my iPad Air 2, iPhone 6, and new Macbook Air. I've been researching online, but I just don't want to make a mistake without first consulting you guys. I'm trying to see if I can safely charge my devices without needing a power transformer. I have T-Mobile with the unlimited talk, text, and unlimited data simple choice plan with credit check. 1. Is the iPhone 6 100-240V compatible and can I just use the power adapter from Amazon to safety charge my iPhone? 2. What about the iPad Air 2? 3. I read on apple's website about the macbook air having Line voltage: 100-240V AC. Does this mean I could just use a power adapter for South Korean outlets? 4. While I'm overseas, can I really text and use data without being charged extra and have it unlimited? Its my first time using this feature by t-mobile and want to know if anyone has any experience with this.