Microphone problem with Xperia E Dual

[Chicoo]

Recently I purchased Xperia E dual and since the begining the people whom i call complain about low volume or they can not hear my voice. Other functions are fine.

I tried using Diagnostics but no improvement so far.

Has anyone faced such problem with the Microphone and how to resolve?

[Da17]

I need help on that same issue. I can do whatsapp call but having difficulty with the phone call. Pls help

[Novoaqui]

Translation via Google translate:

Folks, my friend gave me this cell phone she had stored, so I researched it and the microphone does not work, do you guys have any ideas? His version is 4.4.2

Gente, minha amiga me deu esse celular que ela tinha guardado, dai eu resetei ele a fabrica e o microfone não funciona, voces tem alguma ideia? a versão dele é 4.4.2