S4 screeching/high pitched noise - Galaxy S 4 Q&A, Help & Troubleshooting

When I record a video or use voice recorder I hear high pitched /screeching noise in the video or voice. Also when I make call people can't really hear me I have to talk loud. What caused those to happen? Please reply ASAP

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Very high noise when calling

When I make a call my MDA II makes a very hight noise trough the speaker, it's so high some people cannot hear it.
When the one I'm calling picks up I don't hear it anymore.
Am I the onlyone having this problem?

Problem with recording sound

does anyone face a problem with sound recording ?? when i record i hear back the recorded audio i hear a lotttt of noise , why is this happening i flashed radio and several cooked roms .
please i need someones help
anyone ???
yes, exact same thing here, it's like the mic gain skyrockets to the clouds, I hear an astounding high-pitch noise as if there was a hurrican blowing inside the mic, and this happens even if I record sound in a very quiet room.
On the other side, I use ACR to record all calls, and nothiong like it happens, my voice is clear on the recorded audio...
Audio on the soundrecorder and on the videocamera is simply useless instead.

Noise Reduction

Hello Friends!
I've a Problem with my phone.
When i call someone, other side hears too much noise or they hear their own voice.
When i use headphones or speaker then there is no sound.
I am on latest OTA but the problem remains the same.
There is some problem with the Noise Reduction but i could not find anywhere how to solve this problem.
Please help!
Well I don't have this issue but i'm sure the phone has something wrong in sound/mics!
Try to film a video and see how bad the sound recording is! It's like the back mic is closed or muffled!
I have the same issue plus on a headset the sound is unbearably loud even on 0 level

Slight hiss during calls when someone speaks

Does anyone else experience a slight hiss that occurs when the other person talks, on calls in general? This is my first phone with hd voice, so I'm not sure if what I'm hearing is just a higher quality audio that's revealing more flaws in the audio codec....
I seem to hear it more during wi-fi calls.
I did some more testing and this "hissing" only seems to happen during an "HD voice" marked call. So if I disable VoLTE & wi-fi calling, no hiss. To be clear, the hiss only accompanies audio sounds... and is not present during lulls in conversation or periods of silence.

No sound on the other side while making a video call

Hi all,
When I make video calls via Facebook messenger or viber, the other side will hear at very low sound level, totally incomprehensible. I can hear them fine. During voice calls everything is fine, also the sound from videos and music is loud and clear.
Thank you.

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