Lost internal earpiece

[Veraendert]

Hi everybody. It's been a while but i now have reactivated my PP. Sadly, somewhere along the way, i seem to have lost the internal earpiece. Not in the "oh, there must be some misconfiguration"-way. The piece itself is gone missing. I already bought a new screen but that doesn't include the internal earpeace. Does anyone happen to know which spare part i should grab? It doesn't seem to be available from the store. Thanks in advance.