[Samsung Galaxy S9+ Questions & Answers] quipstad:
Every WiFi call consistently "ends" at the exact moment the call is accepted.

When I call another phone, the call "ends" at the exact moment they accept the call.

When my phone is the receiving device, the call "ends" at the exact moment I accept the call.

This test is performed in airplane mode with WiFi on, to eliminate issues related to cellular signal or carrier.

WiFi calling works great with all other phones on this WiFi network, and only fails on my debloated S9+.

I'm hoping it's due to a package I uninstalled, but I can't find a package that could be related to this issue.

Following is my software info and list of un-installed packages:

Software information:

One UI version 2.1

Android version 10

Kernel version 4.9.186-18803994

Build number QP1A.190711.020.G965USQS7ETH1

Un-installed for User 0:

android.autoinstalls.config.samsung

com.android.apps.tag

com.android.bips

com.android.bookmarkprovider

com.android.calllogbackup

com.android.cts.ctsshim

com.android.cts.priv.ctsshim

com.android.dynsystem

com.android.egg

com.android.hotwordenrollment.okgoogle

com.android.hotwordenrollment.xgoogle

com.android.managedprovisioning

com.android.printspooler

com.android.providers.calendar

com.android.providers.partnerbookmarks

com.android.providers.userdictionary

com.android.wallpaperbackup

com.comcast.modesto.vvm.client

com.diotek.sec.lookup.dictionary

com.dsi.ant.plugins.antplus

com.dsi.ant.sample.acquirechannels

com.dsi.ant.service.socket

com.facebook.appmanager

com.facebook.katana

com.facebook.system

com.google.android.apps.carrier.carrierwifi

com.google.android.apps.maps

com.google.android.apps.restore

com.google.android.apps.tachyon

com.google.android.apps.turbo

com.google.android.configupdater

com.google.android.feedback

com.google.android.gm

com.google.android.gms

com.google.android.gms.location.history

com.google.android.googlequicksearchbox

com.google.android.gsf

com.google.android.modulemetadata

com.google.android.onetimeinitializer

com.google.android.partnersetup

com.google.android.printservice.recommendation

com.google.android.projection.gearhead

com.google.android.setupwizard

com.google.android.syncadapters.calendar

com.google.android.syncadapters.contacts

com.google.android.tts

com.google.android.youtube

com.google.ar.core

com.knox.vpn.proxyhandler

com.osp.app.signin

com.samsung.aasaservice

com.samsung.android.aircommandmanager

com.samsung.android.allshare.service.mediashare

com.samsung.android.app.appsedge

com.samsung.android.app.clipboardedge

com.samsung.android.app.dressroom

com.samsung.android.app.mirrorlink

com.samsung.android.app.omcagent

com.samsung.android.app.reminder

com.samsung.android.app.sbrowseredge

com.samsung.android.app.settings.bixby

com.samsung.android.app.sharelive

com.samsung.android.app.simplesharing

com.samsung.android.app.social

com.samsung.android.app.spage

com.samsung.android.app.taskedge

com.samsung.android.app.tips

com.samsung.android.app.watchmanagerstub

com.samsung.android.ardrawing

com.samsung.android.aremoji

com.samsung.android.arzone

com.samsung.android.authfw

com.samsung.android.aware.service

com.samsung.android.bbc.bbcagent

com.samsung.android.beaconmanager

com.samsung.android.bio.face.service

com.samsung.android.bixby.agent

com.samsung.android.bixby.agent.dummy

com.samsung.android.bixby.service

com.samsung.android.bixby.wakeup

com.samsung.android.brightnessbackupservice

com.samsung.android.calendar

com.samsung.android.cidmanager

com.samsung.android.da.daagent

com.samsung.android.dqagent

com.samsung.android.drivelink.stub

com.samsung.android.dynamiclock

com.samsung.android.easysetup

com.samsung.android.fmm

com.samsung.android.forest

com.samsung.android.game.gamehome

com.samsung.android.game.gametools

com.samsung.android.icecone

com.samsung.android.ipsgeofence

com.samsung.android.kidsinstaller

com.samsung.android.knox.analytics.uploader

com.samsung.android.knox.attestation

com.samsung.android.knox.containeragent

com.samsung.android.knox.containercore

com.samsung.android.location

com.samsung.android.mateagent

com.samsung.android.mcfserver

com.samsung.android.mdecservice

com.samsung.android.mdm

com.samsung.android.mdx

com.samsung.android.mdx.kit

com.samsung.android.messaging

com.samsung.android.mobileservice

com.samsung.android.net.wifi.wifiguider

com.samsung.android.rubin.app

com.samsung.android.samsungpass

com.samsung.android.samsungpassautofill

com.samsung.android.samsungpositioning

com.samsung.android.scloud

com.samsung.android.sdk.handwriting

com.samsung.android.sdm.config

com.samsung.android.securitylogagent

com.samsung.android.service.peoplestripe

com.samsung.android.shortcutbackupservice

com.samsung.android.singletake.service

com.samsung.android.sm.policy

com.samsung.android.smartcallprovider

com.samsung.android.smartface

com.samsung.android.smartmirroring

com.samsung.android.smartswitchassistant

com.samsung.android.svcagent

com.samsung.android.svoiceime

com.samsung.android.themecenter

com.samsung.android.themestore

com.samsung.android.universalswitch

com.samsung.android.visionarapps

com.samsung.android.visionintelligence

com.samsung.app.highlightplayer

com.samsung.clipboardsaveservice

com.samsung.desktopsystemui

com.samsung.faceservice

com.samsung.ipservice

com.samsung.klmsagent

com.samsung.knox.keychain

com.samsung.knox.securefolder

com.samsung.safetyinformation

com.samsung.storyservice

com.samsung.systemui.bixby2

com.samsung.ucs.agent.boot

com.samsung.ucs.agent.ese

com.sec.android.app.apex

com.sec.android.app.applinker

com.sec.android.app.billing

com.sec.android.app.chromecustomizations

com.sec.android.app.DataCreate

com.sec.android.app.desktoplauncher

com.sec.android.app.dexonpc

com.sec.android.app.myfiles

com.sec.android.app.parser

com.sec.android.app.personalization

com.sec.android.app.ringtoneBR

com.sec.android.app.samsungapps

com.sec.android.app.sbrowser

com.sec.android.app.SecSetupWizard

com.sec.android.app.setupwizardlegalprovider

com.sec.android.cover.ledcover

com.sec.android.daemonapp

com.sec.android.desktopmode.uiservice

com.sec.android.diagmonagent

com.sec.android.easyMover.Agent

com.sec.android.easyonehand

com.sec.android.emergencylauncher

com.sec.android.preloadinstaller

com.sec.android.service.health

com.sec.android.soagent

com.sec.android.uibcvirtualsoftkey

com.sec.android.widgetapp.easymodecontactswidget

com.sec.android.widgetapp.samsungapps

com.sec.bcservice

com.sec.enterprise.knox.attestation

com.sec.enterprise.knox.cloudmdm.smdms

com.sec.enterprise.knox.shareddevice.keyguard

com.sec.enterprise.mdm.services.simpin

com.sec.location.nsflp2

com.sec.mhs.smarttethering

com.sec.mldapchecker

com.sec.modem.settings

com.sec.spp.push

com.sec.sve

com.skms.android.agent

com.smithmicro.netwise.director.comcast.oem

com.wsomacp

com.wssyncmldm

flipboard.boxer.app