Insert the point of a spudger in the bottom-right corner of the earpiece speaker and pry it up to remove it.

You may feel some resistance near the top edge, where the speaker gasket seals against the frame. Pull the speaker out gently to release the seal.

During reassembly, insert the top edge of the earpiece speaker into its cutout at a downward angle before pressing it flat to the frame.

You may have to lift the front camera assembly slightly to get the earpiece speaker in its cutout. Insert the antenna and earpiece speaker cables to the right of the front camera cables, then gently press the front camera into its cutout before pushing its cables flush with the rear cameras.