I'm an American living in China. I'm currently home on vacation, and some friends asked me to buy them an iPhone 4S while I'm here, and they'll pay me back when I return. I went to a couple of mobile phone stores, and they flat-out refused to sell me an iPhone without a contract. What am I supposed to do? Where's the best place to buy an iPhone 4s with no restrictions, that I can take back to China? What are the key words I should search for? Also, how about Chinese (simplified) langauge support?