What is the black adhesive material on the back of iPhone connections?
I have been doing some iPhone repairs on both the 6 Plus and 6s Plus and noticed that most of the connections have a black "felt-like" material adhered to the back of them. Typically little squares. During the repairs, many of these shifted or most often came off of the back of the connector. My question is what is this stuff called and can I purchase from Amazon? If so, a link would be greatly appreciated!
Is this a good question?