Note the orientation of the earpiece speaker. During reassembly it must be reinserted the same way or the speaker won't work.

Insert the pointed end of a spudger between the earpiece speaker and its housing

Pry up with the spudger to dislodge the speaker.

A small amount of adhesive secures the speaker.

Use your fingers or tweezers to remove the speaker.

Before reinstalling the speaker on the new screen assembly, ensure that the speaker has no mesh on the back of it.

Before reinserting the speaker, ensure that the raised ends of the speaker's contacts are on the right. If they aren't the speaker won't work.