Replaced front panel, ear speaker doesn't work now?

Either a connection broke loose or it just plain broke. You might just need to replace it. Im not going to put a link of how to do it as you already seem to know how.

Hope this helps and good luck fixing!

hi

its pls check speaker connection is good or not by using multimeter... put optiom in beep mode and check the two point in two probes if its beep comes your speaker is working.... if its not working replace the new one and check 100% its works

ear speaker

If it worked fine for two weeks and you haven't dropped it or got it wet, most likely the ear speaker, shown in the picture above, is not aligned with the front camera and sensor flex cable. You should be able to get it working by re-aligning the ear speaker with the gold contact points on the flex, and make sure you put the correct screws holding down the ear speaker bracket to secure the ear speaker down properly so it doesn't move.

Alternatively if it does not work, it may be possible that either the ear speaker itself, or the front camera and sensor flex wen't bad. However, these parts don't go bad "just because"