The earpiece speaker connector is mildly adhered to the frame.

Grab the right edge of the earpiece speaker and pull it away from the frame to separate the connector adhesive.

If you're feeling a lot of resistance, apply heat and try again.

Remove the earpiece speaker.

During reassembly, if your adhesive is still intact and sticky, you can reuse it. Otherwise, follow this guide to replace the adhesive with custom cut strips.

If you don't have custom cut adhesive strips, use double-sided tape, like Tesa Tape, to secure the speaker to the frame.