Iphone 5s - Bad call quality

Hi, I recently noticed a problem on my iphone 5s, everytime when I received a call, I barely heard the caller, the voice seemed to be coming from a well, not clear at all. What should I do?

Hello Elbeyrouni,
If I understand correctly, the call volume used to be fine but now it's hard to hear the other person.
Here are some steps to try for that.
iPhone: Receiver and call audio quality issues
http://support.apple.com/kb/ts5196
Increase the volume during the call.
Make sure nothing is blocking the receiver. If you're using a protective case or display film, remove it and try again.
Make sure nothing is plugged into the headphone jack or the dock connector.
Check the receiver opening to see if it is clogged with debris. If necessary, clean it with a clean, small, dry, soft-bristled brush.
Try another location with better signal. If the audio issue happens only when on a call, it could be due to the location.
If the iPhone is paired with a Bluetooth headset or a car kit, try turning off Bluetooth on your device. Learn more about troubleshooting Bluetooth connections.
Restart the iPhone.
Make sure your device is up to date.
If the issue is not resolved, contact Apple Support.
Thank you for visiting Apple Support Communities.
Nubz

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IPhone 5 bad call voice quality

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I've got an update on this problem with fading volume. I've isolated it to the set volume on the phone for voice calls when using headphones. When the headphone volume is set between 1 and 6 (out of 16 squares) the callers volume will consistently fade in and out. The fading which is normal to zero volume at 2-5 Hz is serious enough that normal conversation is impossible. When the volume is raised above 6/16 then the callers voice stabilize and I can hear all their words again. Unfortunately, at 6/16 volume their voices are too loud for the headphones.
Furthermore, when headphones are plugged in, and I initial a call after the iphone5 was idle for several minutes, the first dial tone has preceded by a very loud pop an the tone, as though there was too much pressure (charge) that was dissipated all at once.
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Hello there Kevkev5s,
It sounds like your call quality and reception are low both inside, and outside. I want to recommend a couple of articles to help troubleshoot the cellular connection quality. The first is named:
iPhone: Receiver and call audio quality issues
http://support.apple.com/kb/ts5196
Increase the volume during the call.
Make sure nothing is blocking the receiver. If you're using a protective case or display film, remove it and try again.
Make sure nothing is plugged into the headphone jack or the dock connector.
Check the receiver opening to see if it is clogged with debris. If necessary, clean it with a clean, small, dry, soft-bristled brush.
Try another location with better signal. If the audio issue happens only when on a call, it could be due to the location.
If the iPhone is paired with a Bluetooth headset or a car kit, try turning off Bluetooth on your device. Learn more about troubleshooting Bluetooth connections.
Restart the iPhone.
Make sure your device is up to date.
If the issue is not resolved after restoring the iPhone software, contact Apple Support.
If the issue is not resolved, or the above does not help I would next try the troubleshooting in this article named:
iPhone: Troubleshooting issues making or receiving calls
http://support.apple.com/kb/TS3406
Thank you for using Apple Support Communities.
All the best,
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I just bought my iPhone 5. I was disappointed when I received a call and discovered the phone call quality on my end is bad. The other person's voice sounded very tiny and soft although I have already turned up the volume to maximum. Is it that way with all iPhone 5? The receiver could hear me clearly. I tried speaker and the person voice sounded much much clearer.
Please recommend suggestion to fix this or I have a defected phone?
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Actually, after examining my phone properly, i think that this problem might have been caused by the plastic cover that I have yet to remove as it looks like it is blocking the earpiece. ><
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I upgraded from the iPhone 4 to the 5s 4 months ago. Ever since I upgraded, I have periodic issues with call quality. In the middle of a call I will all the sidden start to hear myself talk and the person on the other end cant hear me at all and I cant hear them. This happens to be in the Atlanta, GA area in the same places on interstate 75.

jab1820,
Thank you so much for reaching back out to us. Could you please provide us with your mailing zip code? With your iPhone 5s can you please reset your network settings. You can do this by going into Settings, General, Reset, Reset Network Settings. Then re-try the call quality after that reset has been completed. Please keep us posted.
KevinR_VZW
Follow us on Twitter @VZWSupport

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