Microphone when on speakerphone not working - OnePlus 3 Questions & Answers

I had to recently open up the device to replace the adhesive between the display and the mid frame. After putting it back together, when a phonecall is put into speakerphone, the person cannot hear me clearly at all. They say its extremely quiet and only a few words out of an entire sentence can be heard. Otherwise the person can hear me fine when not on speakerphone.

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Speaker output is weak, not loud enough (simple solution is here)

We heard often that the speaker output is weak, not loud enough.
I could agree with this after I tested on YouTube yesterday.
It is not really weak though, but the speaker is at the back and the sound is not directed to you.
I feel that I cannot hear it good enough. Probably this has something to do with my ear? Not sure, because I read quite a lot of users feel the same.
But then I realized when I hold the phone in a certain way, the speaker output has improved! And suddenly, I heard comfortably (if this is correct word).
See the photo attachment.
I think the sound is reflected by my hand palm and directed up to my ear !
So, there you go, try it
this can be done in any kind of phone or device witness speaker!

in call microphone level

well, i almost have my note II for a year and a half now. and i started making more phone calls recently. at first people could hear me crystal clear. until there was an official rom update. after that time the microphone gain was low in conversations and recordings using voice recorder. now i have to hold my phone in my mouth while screaming for people to understand me. is there a way to adjust the gain on the microphone? it is not a hardware problem i think, cause when i scratch the phone it is extremely loud. but as soon as the sound source is more than a couple of centimeters or an inch, away. the volume drops to almost zero. i have noise suppression disabled.
allrighty then! fixed it, there was some oily residue stuck in my microphone hole, i thought it was the membrane of the mic. well, after I poked a needle in it, people can hear me again. hope this solution helps you all!

Stereo Speakers

https://photos.app.goo.gl/jM0jiUfANc4KR64k2
So from the video it's hard to hear which speaker but you can easily hear the change. Basically what's happening is when listening to music or watching a video audio comes through both speakers. However, when you get a notification all audio stops briefly while it switches to just the bottom speaker, and then stops briefly again to switch back to both speakers. Once it switches to the bottom speaker it gets quieter and audio sounds noticably worse. And if you get multiple notifications at just the right intervals it creates a very choppy listening experience. I don't know if this is intentional or not but I find it very annoying and it makes it feel like the speakers were and afterthought. Also, why do speakerphone calls still come out of the bottom speaker? Why does it not do both like music or videos?
If someone created stereo alert sounds, would it maybe be an easy fix for the contrast in volume and mono source? Basically be a less stark a contrast? Same sound through both speakers on top of the music in the background.
Totally different topic, but somewhat related - I was going through online reviews today and I think a CNET video mentioned that someone determined the top speaker is tuned to 10 db less than the bottom. They basically ran left the same sound through the "left" speaker and then right. And by using another phone and a decibel meter app showed the top is quieter. Then they said something like when the engineers were tuning the audio, when both were balanced, there was distortion from the top speaker. But when both were balanced, but low enough that there was no distortion, it was too quiet. So they chose to go lower on top and higher on the bottom to have a better overall volume, without distortion. I wasn't listening so close so didn't catch if that was speculation on why or someone divulged that.
I searched later and couldn't find the original source, so it might be something someone just noticed.
Speakerphone coming through the bottom speaker is so some dumbass hole won't have it on speaker phone and hold it to their ear and get blasted in their ear and then try to sue Google
dontbeweakvato said:
Speakerphone coming through the bottom speaker is so some dumbass hole won't have it on speaker phone and hold it to their ear and get blasted in their ear and then try to sue Google
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Bwahahahahaha...Very Nice!

Bottom speaker noticably louder than top speaker

I watch a lot of videos on YouTube of people reviewing things, and I noticed that voices sound louder and clearer through the bottom speaker, is this problem specific to my pixel 2 xl or do any of you have the same issue?
StefanoLambelet said:
I watch a lot of videos on YouTube of people reviewing things, and I noticed that voices sound louder and clearer through the bottom speaker, is this problem specific to my pixel 2 xl or do any of you have the same issue?
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It is not specific to your phone.
https://9to5google.com/2017/10/23/t...bout-10-db-quieter-than-the-bottom-one-video/
Also the the top speaker is off when you receive a phone call( ringtone) and you will enable the speaker during a conversation. Why??
fotischr said:
Also the the top speaker is off when you receive a phone call( ringtone) and you will enable the speaker during a conversation. Why??
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If I'm not mistaken, that goes back to before smartphones. Way back, there was a phone model that used the ear speaker for the ring and it was really loud. Actually rings in general used to be much louder than now, though there was a separate speaker for sound on most phones. There was some issue where people were trying to talk and having it ring right in their ear. I can't recall the exact issue, other than it was in the media.
So basically, they don't use the ear speaker for the ring so that people don't get a loud ring while they have their ear up to that speaker.
Voicebox said:
If I'm not mistaken, that goes back to before smartphones. Way back, there was a phone model that used the ear speaker for the ring and it was really loud. Actually rings in general used to be much louder than now, though there was a separate speaker for sound on most phones. There was some issue where people were trying to talk and having it ring right in their ear. I can't recall the exact issue, other than it was in the media.
So basically, they don't use the ear speaker for the ring so that people don't get a loud ring while they have their ear up to that speaker.
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With my Nexus 6 this was not the case.. and I believe that it is very easy for a smartphone to understand and shift to the bottom one when you talk one the phone.
Well it isn't a legal requirement, just a design practice. Doesn't surprise me that a Chinese company would decide to do things differently. Proximity sensors weren't on phones until fairly recently.
It's weird as the quitet speaker on my device is the one below the navigation bar.

Vibration noise (buzz/hum) when making calls

Anyone experience a noise from the display speaker like a slight buzzing or hum during calls? It only seems to affect calls (not media) and only when my ear is positioned just above the exciter. MKBHD also mentioned this noise in his review. I went back to T-Mobile to listen to the floor model and it sounded clean. I also posted on reddit with other responding that their units had no noise. Unfortunately the store won't let me return it without charging me because none of the employees could hear the sound, or they said that it's too small an issue.
pongalong said:
Anyone experience a noise from the display speaker like a slight buzzing or hum during calls? It only seems to affect calls (not media) and only when my ear is positioned just above the exciter.
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I've noticed the same thing, sometimes it sounds kind of like static, but the rest sounds like a mild buzzing. I only notice it some of the time on phone calls. Do you have a case on your phone as well? Might be worth taking the case off and see if it still happens.

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