I successfully replaced the screen of my SAMSUNG J5 mobile phone, being sure that was the problem. Carefully, I heated the phone around with a hairdryer to remove the old screen, I took it out, cleaned the remaining glue residue with alcohol, applied the recommended adhesive B 7000 around it, and installed the new screen. It requires a lot of attention to properly attach the mini connector of the screen to the phone's motherboard, so as not to damage the delicate materials. Then, I placed the phone under two heavy books for 2 hours and the screen adhered perfectly. The phone was reborn...!! Good luck to anyone who deals with it