Hey there, @vlaicu94.
Try cleaning the affected Bud:
- Remove the ear tip from the earbud carefully. Don't use force to remove the ear tip.
- Clean the sensor, mesh and ear tip with a clean, soft cloth.
- Clean the receiver with a cotton swab and dry brush to remove any foreign materials.
- Reattach the ear tip onto the earbud when you've finish cleaning.
Please note: do not use liquids, such as alcohol or soapy water, when cleaning the Galaxy Buds.
