People can't hear you on calls, or the speaker sounds low or crackly.
Mesh clogged with dirt, liquid, or a damaged speaker or mic.
We clean the mesh; if that's not enough, we replace the speaker or the mic.
It depends on the model and on what we find inside, so we quote each repair individually. The diagnosis fee depends on the device, and you approve the exact repair price before any repair starts. If it can't be fixed, you only pay the diagnosis.