could this be it?
https://www.turbobygarrett.com/turbobygarrett/turbochargers/gt2871r
Here's an image of it
http://www.ebay.com/itm/Genuine-OEM-Ford-Turbocharger-Assembly-BC3Z-6K682-B-/301962213584
this happens to me too, I also have an s7, i just have to unplug and replug it in. I hear other phones such as the nexus have an easier time connecting