Issue of poor sound quality on calls android phone. Sometimes people can’t hear your voice during calls.
check your volume settings, adjust volume if low volume from device. While in a call, use speakerphone or wired headset to see if sound quality improve or not. If not fix poor call quality sound, issue is probable network signal strength. A bad network connection cause to dropped calls and poor call quality sound.
Try below troubleshooting steps:
Step 1: Turn your phone off and turn on again
Step 2: Set connection priority as “Data only”
Settings > Wireless & networks > SIM cards > Connection priority > Data
Step 3: Software update is available or not on your phone.
To manually check for updates, go to Settings > about phone > System updates
Step 4: Use safe mode to see if apps you installed are causing the issue
Press & hold the power button > Touch & hold the power off > Reboot to safe mode > OK
Step 5: Reset your android phone
Settings > Personal > Backup & reset > factory data reset > Reset phone / Reset tablet > Erase everything
Step 6: Clear cache partition
— modified on Feb 16, 2017 2:49:30 PM