Voice sounds and speaker in calls are so low that is almost impossible to hear

REPRODUCIBILITY (% or how often): allways
BUILD ID = OS VERSION (Settings > About product): 4.2
HARDWARE (XA2, X10, X10 II, …): x10 II
UI LANGUAGE: english
REGRESSION: (compared to previous public release: Yes, No, ?):

DESCRIPTION:

while trying to have a conversation while a called is working , the voice sound of the other person is really low and the connection is too bad, also happens in speaker

PRECONDITIONS:

STEPS TO REPRODUCE:

  1. doing a call
  2. the sound of the voice is too slow and in the speaker
  3. and the comunication is badly

EXPECTED RESULT:

that the voice sound should hear properly

ACTUAL RESULT:

bad voice sound

ADDITIONAL INFORMATION:

(Please ALWAYS attach relevant data such as logs, screenshots, etc…)