I am very satisfied with the product. No problem for dismantling, the mediator remontage.Le very convenient to store the screws microphones. Personally I have used once to replace the batterie.Je not going to have the fun disassemble every day !!!!! I did not use the cup as a swipe with your fingers is enough to remove the hull and gently and there is a tab to remove the battery. I think this kit is to be used with an iPhone and no use of force. Not for the mechanical !!!!