The next day I got then my screwdriver (the much better fit) and was about to be finished. When I tried to connect the last flex cable, it's just torn. I have not applied any force or pressure on the cable. I am always handled gently and with extreme caution to the cable, it was not stretched. However, it is simply torn, which may not be in my opinion. I have often obstructed other displays, where I have sometimes shaken and pulled on flex cable and nothing happened.
At the end of the day he was standing there with 25 less and without a mobile phone. Therefore, my recommendation would be to spend the extra money on a display. For 25 you can not expect miracles, but a product that is not immediately broken.
However the one star more I forgive, because the equipment was quantitative good, although not high. The display itself also did really a good impression.