BlackBerry Curve 8900 Microphone Replacement

Press and slide the battery cover from the back of the device with your fingers.

Remove the battery by pulling it out.

Using the iFixit Opening Tool, remove the lower rear cover.

Using a T6 Torx screwdriver, remove the six screws.

Using the iFixit Opening Tool or your fingers, remove the midframe of the phone.

Work your way around the case, slowly, prying the back of the plastic tabs until the motherboard comes free.

With your fingers, carefully remove the screen so as not to damage it.

With your fingers, carefully unhook the antenna cable in all three locations.

Detach the ribbon cable on the front of the motherboard using the Spudger tool.

Detach the motherboard from both ribbon connections.

The ribbon connections are indicated by red circles on the photograph.

The ribbon connections are indicated by orange rectangles on the photograph.

Replace the entire motherboard to replace the microphone.