Fangrui Product Details 1. Compatible Lcd Screen And Digitizer Full Assembly For Gopro Hero4 Black 2. Lcd Screen And Digitizer Full Assembly For Gopro Hero4 Black. 3. Your Broken Or Unusable Item With A New One. 4. Each Item Has Been Checked And In Good Condition Before Shipping. 5. Completely Fit And Work. 6. Professional Installation Is Highly Recommended. We Will Not Be Responsible For Any Damages To Your Device That You May Cause During The Changing Of Parts. 7. Before Installation Notes 8. Tips 1: Test Before Installation 9. When Testing, Do Not Remove Any Protective Film Or Tags. Please Pay Attention To The Problem Of Static Electricity. 10. Before Attempting Any Repair, Be Sure To Ground Yourself Is An Esd (electro Static Discharge) Strap. This Will Prevent Static Electricity From Damaging The Electronic Components Within The Device. 11. Ensure You Wear Eye Protection And Use Caution Not To Cut Your Finger With The Glass Splinters. 12. Tips 2: Simulates Testing 13. Screen Is Very Fragile Product. We Strongly Suggest Test Before Installation. Please Simulates Testing, Which Means Device Apart, (motherboard + Lcd Or Screen) Connected Audio Cable And New , Power On, Test Finished. If Test Ok, Please Install It. If It Can Not Show, Please Contact Us At The Very First Time. And Please Do Not Force It To Be Installed In Device. We Will Not Be Responsible Once The Screen Is Installed. 14. Tips 3: Do Not Over-bend Cable 15. Please Make Sure Lcd Cable Do Not Over-bend. Over 90 Degrees Bent Will Cause Black Display.