OnePlus 7 Pro, Android 11, and speaker

@jmc1974 I also contacted TMO and OnePlus and they both acted like they had no idea what I was talking about. I was waiting for the usual "I know nothing about phones so try factory resetting it" suggestion but surprisingly neither of them suggested it.

@ColoradoScripter the hearing aid compatibility thing seems to have fixed it for me! Good find! We'll see if it's consistent. 

ColoradoScripter wrote:

Umm… so this might just be my imagination, but I went to:

Settings → System → Accessibility and turned on “Hearing Aid Compatibility”.

And that seemed to stop the sound from coming out of the bottom speaker on incoming calls. It only comes out of the earpiece now. Can anyone else confirm?

I have always had that off.  On the build I am on, it still happens about 1 in ever 6 calls. 

Umm… so this might just be my imagination, but I went to:

Settings → System → Accessibility and turned on “Hearing Aid Compatibility”.

And that seemed to stop the sound from coming out of the bottom speaker on incoming calls. It only comes out of the earpiece now. Can anyone else confirm?

I fixed the lock screen time issue by changing the time to 24 hours and then back to 12 hours.

I’ve gotten the impression that OnePlus feels that all the bugs have been resolved in the build they re-released on Friday 4/16: https://forums.oneplus.com/threads/oxygenos-11-0-0-2-for-the-oneplus-7t-pro-and-oneplus-7t.1420069/

It sounds like this does fix a lot of bugs but doesn’t completely eliminate this issue - just drastically reduces its occurrence, which would be an improvement. There’s no telling how long it may take before this re-released version goes back through T-Mobile’s process and we receive it. Someone at T-Mobile certainly knew enough about what was going on to take down that Software Updates page for this phone, but I’m not sure what level could possible provide us an acknowledgement or ETA.

Same issue and a royal pain!!!  Absolutely ridiculous!!!  Turned off android auto that was turned on with this update...no effect...no bluetooth on... Just a pain!!!

Update 71 (April 5)

IST 10:49 am: Users of the OnePlus Nord and OnePlus 7 series running OxygenOS 11 are reporting an issue where the lock screen clock is stuck in 24 hrs clock system even when the system is set to 12 hrs system. For a workaround and more on this, check out our coverage here.

my phone also shows the lock screen on 24hr format even as the system setting is for 12hr..

Update 70 (April 3)

IST 10:45 am: An official acknowledgment has come from OnePlus on the OnePlus 7 series stable Android 11 rollout halt. An updated build with all bugs fixed will release in the future.

I have also a OnePlus 7Pro and just got the dreaded OTA update 2 days ago with the same results, any call made or received goes thru the speaker, today I called TMO Tech support and they acted like they never hear about this issue…  they had no solutions, then I called OnePlus Support (1-833-777-3633) and also they acted like this was new news. I am starting to regret switching from Samsung, I mean the 7Pro has been an excellent phone, but c’mon. this issue was noticed since Open Beta 2 ( https://piunikaweb.com/2021/04/19/oneplus-android-11-oxygenos-11-update-known-bugs-issues/ ) 

 https://piunikaweb.com/2021/02/19/oneplus-7-pro-users-on-oxygenos-11-android-11-open-beta-facing-call-audio-issues/

I wonder if T-Mobile is going to take back this phones is there is not fix soon? I mean no private conversations, can’t use this phone…  Tmobile supposed to be testing the updates for this type of issues, is not like they allow all updates from any* phone maker (except Apple) if this phone was unlocked or they allowed direct updates I could blame the makers (Oneplus), but they sit on the updates for months supposed because the test. so much for testing. 👎 TMobile

Cross-flashing isn't that hard but it isn't easy either.  The MSM Tool makes it pretty easy to recover the device if something goes wrong.  It is highly recommended to have the SIM lock removed before flashing though.  As mentioned, the issue is not fully resolved on the global NA firmware yet.  It will hopefully be soon but there are no guarantees. 

On one of the many threads about this issue on the OnePlus forums, someone reports to have tried a factory reset and found it does not resolve the issue. https://forums.oneplus.com/threads/oneplus-7-pro-updated-to-android-11-desaster-struck-call-sound-comes-out-of-bottom-speaker.1421724/

It is possible to load the global firmware on the T-Mobile variant (GM1915). This requires, among other things, a wipe of the phone and isn’t something I’d necessarily call “easy” - though it is fairly well documented out there - with instructions on XDA and anecdotal reports on the OnePlus forums.

I’m still hopeful that the fact that the software update page is still down at the moment means they’re actively working on deploying the re-released update from OnePlus. Though it sounds like since OnePlus didn’t completely eliminate the issue on their side, it would at least significantly reduce its occurrence.