It is easy to take away the back cover. Take away the battery after power off the phone. Peel off the warranty label There is a screw beneath the label. Take away SIM cards and SD card if you have any. Pry off the back frame with a plastic card. Pry up the broken receiver. Install the new receiver. Install the battery. Power on the phone. Open the dialer. Press the Receiver button to test the earpiece. Beep comes out clearly. Double click the Back button to return. Power off the phone (optional).