8. Reset the phone.
Poor sound quality on calls
Start by checking your volume setting. You can only adjust the call volume with the Volume buttons while
you’re on a call.
Wired headset
1. Make sure the headset is inserted completely into the headset jack.
2. If you are using a case or cover, remove it and re-insert the headset to see if it was interfering.
3. Try a different headset to determine if the issue is with the original headset.
Earpiece
1. Check that nothing is covering the microphone:
•
If you are using a case, cover or screen protector, remove it and see if it was causing the issue.
•
If the phone was shipped with a protective plastic film, remove the film.
2. While in a call, try using the speakerphone or a wired headset to see if the sound quality improves. If it
doesn’t, the issue is probably network signal strength instead of hardware.
3. Turn your phone off and then on again.
Press & hold the Power + Volume up buttons simultaneously, then touch Restart to establish a new
connection with the network.
4. Use safe mode to see if apps you installed are causing the issue and uninstall as needed.
5. Check if a software update is available for your phone.
6. Reset the phone.
Bluetooth device
Check battery level of Bluetooth device and phone, and charge if necessary. Bluetooth devices may
disconnect or create noise when the phone or Bluetooth battery are low.
Can't make/receive calls
Try these troubleshooting steps.
Fix issues : Call and SIM issues 229
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