AMOLED Has Defect for Samsung Z Flip 4 F721 F7210 F721U/B/N LCD Display Touch Screen with Frame Digitizer Assembly

AMOLED has defect for Samsung Z Flip 4 F721 F7210 F721U/B/N LCD Display Touch Screen with Frame Digitizer Assembly(Test) Please test the screen before installation and take video for the whole process.You only need to connect the The screen flex to the motherboard.(Needn't remove the components to new screen while testing).If there is any problem with the item,Please stop the process and contact us.Important:1. LCD screen is fragile and of high value. It is necessary and important to carry video when unpacking. When you receive damaged or short LCD screen, it will be effective evidence.2. Please test before installation. (remember!!!)3. If you are not good at replacing the LCD, please replace it by a professional or repair shop.4. Please test 3 times before shipment. If you can't provide video, we won't believe it. We are not responsible for any installation errors.The warranty is invalid if:1. LCD display or touch screen is damaged due to human factors.2. Before the test equipment works, stick the screen to the equipment.3. Water enters the screen.4. Repair or disassemble without our permission.5. Warranty label removed. To protect the screen, turn off the phone before replacing it.In order to reduce the risk of damage, we recommend that you repair it at yourlocal repair shop.