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 didnt 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 wont last long.
Well, your experience is really sad. And where did you buy your refurbished smartphone? The fact is that GES uses modern equipment and spare parts from certified manufacturers in its work. In general, the best confirmations of my words are numerous reviews about the quality of the work of this company.