When your phone's back cover door is damaged or aged, this replacement product allows you to easily replace it and restore your phone to a new appearance.Product Usage: 1.Open the back of the phone: Based on the phone model, locate the fixing point of the back cover door, and use the corresponding tool (such as a screwdriver) to open the back of the phone. 2. Remove the old back cover door: Gently remove the old back cover door, taking care not to damage other components. 3. Install a new back cover door: Gently secure the new back cover door to the phone to ensure a perfect fit with other parts.Complete installation: If everything is normal, gently press the back cover door to fully secure it to the phone.