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People can't hear me on the other side of the phone when using 4G 3G or 2G - ZS600KL

Star I

I had to send my phone for warranty since nobody can hear me good on the other side of the phone.
The mic works perfectly on voicememo and recording whatsapp messages.
So when i call people they tell me that they hear me underwater or they hear me stuttering or hear nothing at all.
I have a cheaper samsung phone and use the same sim card and i have 0 issues people hearing me.
And no i am not placing my fingers on the mic and i had to remove the original casing for nothing from asus zentalk employee..
I have started a thread about this and i can't find this one anywhere on this forum, why has this been deleted?!
Many people had the same issue and there was no solution for this either, even new phones were resent and still having the same issue.
Internally must know something about this issue because it was mentioned a lot!
Always downloaded the latest firmware and OS still the same problem.
Now i have to miss this phone for weeks because this has not been tested properly.
Can someone confirm that there is an issue with this 1st gen phone?
Calling should be essential for a phone and this one is no good.


Rising Star II

The same issue i have also and i raised this issue to Asus Support. They given the steps that above mentioned , even not fixed. We need proper solution for this @Christine_ASUS and @Y_ASUS . This issue happen while talking only means when mobile away 2" from face people in other end they keep complaining that they cannot able to hear my voice properly. If i use earphone there is no issues to hear in other side

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Yes, this just happened to me a few minutes ago. Such a cheap device.

Community Legend II
Hi mamsafras & CyberPunk2302
Thank you for your asking. As dj_engine1 mentioned above, he reported that his logs didn't show anything wrong. If the situation remains the same after performing the Factory Reset, please check the SMMI test:
Calculator> type ".12345+=">SMMI TEST>Single Test>SIM Signal Test/Phone Call Test/BoardMic Test
Do all the SMMI test pass? If any of the SMMI tests fails, indicating high possibility of faulty hardware, kindly bring your device to the nearest ASUS repair center for device checking:
If it is impossible to access the service center during Covid-19 period, please try Call us: