?Customer Service?All of our products have undergone strict QC testing. If you encounter any problems during installation and use, you can contact us at any time by email. We will provide you with a solution as soon as possible. Save time and money for you! it’s very simple replace the screen by yourself to save money, we provide step by step video tutorial for a quick and easy install. ?OLED?Compared with traditional LCD screens, OLED screens bring vibrant and vibrant images and battery life is superior to LCD screens, more durable and more resistant to image aging. The screen offers excellent viewing angles and inky blacks. Due to the lack of a backlight, OLED screens are thin and light. Can be direct lit or edge lit, making it suitable for a variety of different applications. OLED displays can be curved and flexible because they don't require backlights or color filters. ?About Face ID Funtion?:It has design Face ID to only work with your original ear speaker on your phone, so unfortunately Face ID will not work. If you needs Face ID, you need to transfer your original ear speaker from the old earpiece part to the new one above to keep Face ID function. Tips: Turn off the phone before replace the screen; Plug and unplug the battery flex first to eliminate abnormal problems; Use a hair dryer to soften the glue and make it easier to remove the screen. ?Full Assembly?: Pre-installed earpiece speaker, proximity sensor. For iphone XS MAX replacement screens, use sturdy frames, strong compression resistance, and high stability IC chips. The product flex cable is made of durable materials, which are not easy to break during installation. The back metal plate not only provides protection for the OLED screen, but also has graphite material on the surface, which has better heat dissipation function. ?Compatibility?: For iPhone XS MAX OLED (not LCD) replacement screen only compatible with iPhone XS MAX, 6.5 inches (Models A1921 A2101 A2102 A2103 A2104). NOT for other models. You need to confirm your mobile phone model before purchg, and you can check the specific model through the mobile phone settings. it’s very simple replace the screen by yourself to save money, we provide step by step video tutorial for a quick and easy install.