I bought an iPhone 5s that had a "refurbished" prefix two years ago. During the first month there was no troubles, I was happy with the fact that I managed to save money. However, further the problems appeared: the sensor didn’t respond to the commands, the battery charge was enough for one hour of active use. All in all, a month later I just refused to use this phone and bought a new one. And the refurbished one is still somewhere in a box at home. This is all to say that in my opinion business in such a field is just a total deception. The refurbished gadgets won’t last long.