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Nokia 2320 Classic Bluetooth is used for data transfer between devices with Bluetooth.In Nokia 2320 Classic Bluetooth can be damage or not working due to water damages and rust.It can be fault for shortage and burned parts  Nokia 2320 Classic Insert sim problem solution ways jumper In above diagram you can see some parts that are in lined with red color. Clean these parts after disassemble with electronics cleaner and then apply some hot air so that it can be dry.Do not apply much air with hot air station because it can harm your skin or may can damage the mother board of Nokia 2320 Classic.
These parts are also used in FM function so if FM Radio is not working in Nokia 2320 Classic you can also re flow and resold these parts that are identify in the above diagram. 

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