Call ending after 15 minutes - Xperia Z3 Q&A, Help & Troubleshooting

So, I had a conference call this morning but was just a listener with my mic muted. Was using speaker phone with mic muted and screen off and after exactly 15 minutes, the call ended. I dial back in and do the same (speaker phone, mic muted, screen off) and the call dropped again at exactly 15 minutes.
My question is simply: WTF?

One possibility could be the conference # itself. I'll need to test a different call and see if the same issue occurs.

Seems quite likely that it was the conference itself

Was on the phone for over an hour the other day on a business call, so it definitely doesn't affect normal phone calls.

Related

Speakerphone always on when calling/called

Hi there,
My phone does this weird thing lately where the speakerphone is alwas on when I call or am being called. Doesn't matter if I turn speakerphone off (pressing the green answer key), next time it's on again. After the call it returns to profile Normal though, just when a call arrives or when I make a call that this happens. Quite annoying to hear the other person blasting through the speaker where all around me can hear this as well...
Cheers,
Steven

On Call End - app problem

A friend of mine made this app On Call End
www.appbrain.com/app/on-call-end-(not-call-log)/com.brosix.callend
The last thing he added is Call Duration Toast Notification, but it is not working as good as it should.
He said that he used OFFHOOK and IDLE to measure the time. But that way if you call somebody, phone rings few times and you hangup it will show 10 secs for example.
What other methods can be used to take that measurement.
Call Cost it very accurate doing that
www.appbrain.com/app/call-cost-2/com.echlab.callcost
but is has other minuses.

[Q] Phone switches between regular speaker and speaker phone between calls?

This just RECENTLY started happening a few days ago...
My phone seems to not like using the actual earphone speaker, it goes back and forth between speakerphone and regular speaker at its leisure between calls.
What I've noticed:
1. It never happens during the same call, I might make a call and the regular speaker works, then I make another call, theres dead silence and I have to activate the speaker or either that the person hangs up on me and I have to call back and instantly activate the speaker phone
2. It happens after a reboot and the behavior is the same as #1 above
Has any other person noticed this? Any help would be GREATLY appreciated, its annoying as hell

[Q] Problems in answering incoming calls

I've got a problem when answering the call. Most of the time when I take the call the other participant cannot hear me unless 3-5 secs pass. It is as though I put an incoming call on hold and after 3-5 secs pass I am able to continue conversation normally. During that mute period I keep saying 'hello, hello" but the caller can't hear me. I've got stock rom, no modification, regular updates but this problem is persistent. This also happens from time to time when I make an outgoing call but it is more frequent in incoming calls. Please help. Thanx!

Issue with incoming calls from the caller audio side: first seconds noise

Weird problem, I can't find a solution.
When answering a call, tge caller does not hear my voice in the first few seconds, but voice (generally Hello) comes out like noise. Then after a few seconds all goes back to normal
This does not hsppen when calling directly, and even stranger, it does not happen if I mute the ringtone. In this case my voice is cristal clear right grom the beginning.
Os in Android 7.0, kernel 4.1.18-gaa01840 model number nxt-l29.

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