Question :

Why am I getting the "Connected USB device isn't supported" message when using my wired earphones with my Galaxy S20 FE?

Answer:

If you are experiencing issues with hearing sound properly or receiving an error message about compatibility when using a wired earphone with your Galaxy S20 FE, it might be due to the type of USB audio accessory you are using.

The Galaxy S20 FE supports only digital-type USB audio accessories, so if you are using an analog-type USB audio accessory, you will not be able to hear sound from your earphones. This is normal behavior.

To resolve this issue, ensure that the USB Type-C earphone or adapter (gender) you are trying to use with your Galaxy S20 FE is a digital-type USB audio product. Additionally, make sure the earphones or adapters are compatible with your device before purchasing them.

For reference, Samsung's USB Type-C audio accessories are mostly digital-type USB audio products, except for the following analog-type models:

Samsung Analog USB audio earphone: GH9-14995A

Samsung Analog USB audio genders: GH9-12511A, GH9-12511B, GH9-12782A

These models are marked with "Analog" text.