Dear customers, so clear that you can choose our store, before buying, there are some tips you need to know, very important 1. Does not come with manual or tool. If you are not professional in maintenance or have no experience in repairing electronic equipment, we do not recommend replacing the screen by yourself. Take it to a repair shop for help saving time and money. Or search for the relevant installation video on YouTube platform and follow the installation steps to install. 2. Please check if the product is in good condition and test it before installation. Do not remove the protective film or labels during testing. Beware of static problems. 3. Do not bend the cable. During installation and testing, please make sure the LCD cable is not bent. Bends above 90 degrees will result in black vision. 4. All our products will be tested well by QC before shipment, to work perfectly on your equipment. But the screens are made of glass, please be very careful when opening the package or installing the screen, avoid damage. 5. If you have any problems with your order, please feel free to contact our team, we will provide help within 24 hours.