Screen Replacement For Samsung Galaxy S21 Ultra G998U Help to replace the new screen to make the phone look like new one. Previous page Next page 1 Damage Scene: 2 Cracked or Broken 3 Touch Not Sensitive 4 Not Show Normal 5 Black Screen Previous page Next page 1 Confirm the Model 2 Product Advantages 3 Good Quality Control 4 Advanced Tools 5 Service Guaranteed Test Before Installation Pay attention to electrostatic problems during the test, otherwise you will feel that the touch is not sensitive. Striped/Black Screen/Non Touch The LCD screen connector may not be tight. Try to reinstall the connector cable. Don't Touch IC Please do not touch the IC position. This is precision component, otherwise it will cause the screen not to display. Last Step of the installation Because the screen need to stick completely to frame, please use the elastic or fix tools to fix the screen for 3 to 4 hours. How about the screen quality? We provide professional LCD screens. All products have passed a strict quality inspection before shipment. Does it comes with installation guide? If you need the link of the installation video guide, we will send you After installation, the phone will be turned off when on the calling. Please check whether your induction holes are blocked by foreign bodies, just clean up. After the installation, the stripes appear, and I re -connected the FPC cable, but the line still not disappear. In this case, please check whether in addition to the stripes, there are irregular black spots. If so, it means that the screen is damaged during the installation process and it is no longer available.