Description of the problem: during a call can not hear the caller’s voice it is too quiet despite setting a maximum volume on your phone.
Diagnosis: the most common cause of such problems are the problems with the operating system, rarely is this a technical fault.
Solution: to solve these types of problems can be through the use of several options:
1. Restart the system.
2. Use another application that allows calling than that offered by Samsung.
3. Reset the phone.
4. Replace the speakers in the phone.