What is the difference between tft screen and Amoled screen? TFT screen is thicker than the original one, it can be installed, but it is best to ask a professional to install it. Amoled screen is higher quality, if your phone is used for daily, we recommend you to choose a Amoled screen; What's the function of the product? Our product place the role on display and touch. It can replace your broken screen, like dead pixels, unresponsive touch and other issues. What's the warranty? Our technicians will test the product before shipping. Also, we offer a 12 month warranty. However, we are not responsible for human-damaged. What should I pay attention to during installation? a. Please test the product before installation. b. The screen is fragile, do not press hard. c. Do not overtighten the screws.