On sale unlocked refurbished iPhone 6s

For Mobile / Unicom users, the China iPhone 6s and Hong Kong iPhone 6s which is better? In fact, the difference is very few, the network is common. So both versions are no problem. But for China Telecom users, if you choose Hong Kong version of iPhone 6s, you may pay attention to the purchase of unlocked refurbished iPhone 6s from a profession dealer such as Cell Phone Age which has been specialized in mobile phone industry since 2008.