A little off topic however if you were not aware. Here in Japan, people love to upgrade electronic and throw old ones away. Even if they are in perfect condition.
Since the iPhone 6 came out, 1000’s of Japanese iPhone 5’s have been abandoned, lost, thrown away or given away. What does that mean for foreigners? Free iPhone 5’s from Japan. That’s right Japanese throw them out, not caring about the value. I found an iPhone 5s in the trash just last week, got it unlocked and sold it overseas. Nice pocket money.
So if you are looking for free iPhone’s, Japanese is the place. All you need to do is get in unlocked from the Japanese carriers e.g. Softbank, AU or Docomo and the iPhone is your for free.