Weird slowed down voice quality on call

Question

Level 1

8 points

Weird slowed down voice quality on call

I have noticed a rare but very annoying issue with phone call audio quality on my iPhone 7plus. It is like the voice from the other caller is suddenly put through digital molasses and slowed down and distorted. Then it resumes normally after 1-3 seconds. It is not with any particular other caller, and I believe it has happened with and without WiFi calling enabled on my end. I am on T-mobile in CA. Has anyone else had this occur? Any ideas?

iPhone 7 Plus, iOS 11.4.1

Posted on Jul 10, 2018 6:56 AM

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Answer 1

Ingo2711

Level 10

80,307 points

Jul 11, 2018 11:33 AM in response to twillett

There have been similar problems in the past, when LTE has been set to "Speech & Data". Switching back to "Data only" solved that.

Another reason might be, if you are using a case around the phone, and the lid is covering the backside while on call, covering the backside microphone.

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Answer 2

Ingo2711

Level 10

80,307 points

Jul 10, 2018 7:02 AM in response to twillett

Your LTE or 4G settings are set to "Data only", instead of "Speech & Data"?

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Answer 3

twillett Author

Level 1

8 points

Jul 11, 2018 11:15 AM in response to Ingo2711

No, it is set to both, but good to check. I don't have to be moving and LTE signal has been high most times it occurs, so I am suspecting an iOS problem but not enough to warrant the dreaded reset everything nuclear option.

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