Hi @Timad, let me see if I can help out here.
I have translated your question to English as this is an International forum, please post any replies in English and it will be easier for me and other users to assist you.
It is possible to replace a broken ear speaker, but as unauthorized service attempts may render the warranty void, My suggestion is to get in contact with your local support team. They should be more than capable to direct you to an authorized service center or arrange for the phone to be sent to an authorized service center.
If you have any questions regarding the service such as service routines, warranty and consumer laws, these kind of questions are best answered by your local support team as well as they vary depending on which market/region you are located in.
I hope that answered your question!
