<?xml version="1.0" encoding="UTF-8" standalone="yes" ?>
<!DOCTYPE bugzilla SYSTEM "https://bugs.webkit.org/page.cgi?id=bugzilla.dtd">

<bugzilla version="5.0.4.1"
          urlbase="https://bugs.webkit.org/"
          
          maintainer="admin@webkit.org"
>

    <bug>
          <bug_id>246331</bug_id>
          
          <creation_ts>2022-10-11 03:24:23 -0700</creation_ts>
          <short_desc>[iPhone 14] User cannot unmute WebRTC call and loses incoming and outgoing audio after receiving PSTN call and declining it</short_desc>
          <delta_ts>2025-05-25 23:32:18 -0700</delta_ts>
          <reporter_accessible>1</reporter_accessible>
          <cclist_accessible>1</cclist_accessible>
          <classification_id>1</classification_id>
          <classification>Unclassified</classification>
          <product>WebKit</product>
          <component>WebRTC</component>
          <version>Safari 16</version>
          <rep_platform>iPhone / iPad</rep_platform>
          <op_sys>iOS 16</op_sys>
          <bug_status>NEW</bug_status>
          <resolution></resolution>
          
          <see_also>https://bugs.webkit.org/show_bug.cgi?id=247993</see_also>
          <bug_file_loc></bug_file_loc>
          <status_whiteboard></status_whiteboard>
          <keywords>InRadar</keywords>
          <priority>P2</priority>
          <bug_severity>Critical</bug_severity>
          <target_milestone>---</target_milestone>
          
          
          <everconfirmed>1</everconfirmed>
          <reporter name="Madara Freimane">madara.freimane</reporter>
          <assigned_to name="Nobody">webkit-unassigned</assigned_to>
          <cc>joma</cc>
    
    <cc>karlcow</cc>
    
    <cc>webkit-bug-importer</cc>
    
    <cc>youennf</cc>
          

      

      

      

          <comment_sort_order>oldest_to_newest</comment_sort_order>  
          <long_desc isprivate="0" >
    <commentid>1904749</commentid>
    <comment_count>0</comment_count>
    <who name="Madara Freimane">madara.freimane</who>
    <bug_when>2022-10-11 03:24:23 -0700</bug_when>
    <thetext>Summary:
[iPhone 14] User cannot unmute WebRTC call and loses incoming and outgoing audio after receiving PSTN call and declining it

Tested devices and browser:
Bug is reproducible on:
- iPhone 14 (16.02, build: 20A380) with Safari
iPhone 14 (16.0.3, build: 20A392) with Safari

Bug is not reprodudicible on:
- iPhone 11 (16.02, build: 20A380) with Safari
- iPhone 11 (16.03, build: 20A392) with Safari

Use case:
Preconditions:
Users (also iPhone 14 User) are in active audio/video WebRTC call 

Steps:
1. iPhone 14 User receives a PSTN call
2. iPhone 14 User declines the PSTN call
3. iPhone 14 User tries to unmute the WebRTC call

Actual result:
Incoming and outgoing audio disappears and iPhone 14 User cannot unmute WebRTC call (unmute button not responding)

Expected result:
WebRTC call goes to &quot;unmuted&quot; state automatically after the PSTN call. Remote participants in the WebRTC call can hear iPhone 14 User again.

Reproducibility:
100%

Additional information:
-Sysdiagnostics file added:
 https://drive.google.com/file/d/181R5Tou-8x4Qryb8tQW4l2-W-kniRrTW/view?usp=sharing</thetext>
  </long_desc><long_desc isprivate="0" >
    <commentid>1906427</commentid>
    <comment_count>1</comment_count>
    <who name="Radar WebKit Bug Importer">webkit-bug-importer</who>
    <bug_when>2022-10-18 03:25:17 -0700</bug_when>
    <thetext>&lt;rdar://problem/101285001&gt;</thetext>
  </long_desc><long_desc isprivate="0" >
    <commentid>1908383</commentid>
    <comment_count>2</comment_count>
    <who name="Madara Freimane">madara.freimane</who>
    <bug_when>2022-10-26 04:04:13 -0700</bug_when>
    <thetext>Bug is still reproducible
Tested device:
iPhone 14 | iOS 16.1, build: 20B82</thetext>
  </long_desc><long_desc isprivate="0" >
    <commentid>1911810</commentid>
    <comment_count>3</comment_count>
    <who name="Madara Freimane">madara.freimane</who>
    <bug_when>2022-11-11 08:11:00 -0800</bug_when>
    <thetext>Bug is still reproducible on iPhone 14 (iOS 16.1.1,  build 20B101) with Safari</thetext>
  </long_desc><long_desc isprivate="0" >
    <commentid>1912659</commentid>
    <comment_count>4</comment_count>
    <who name="Madara Freimane">madara.freimane</who>
    <bug_when>2022-11-15 10:20:51 -0800</bug_when>
    <thetext>Hi, @Youenn!
 I am not able reproduce this bug anymore with iOS 16.2 Beta 2, build: 20C5043e, iPhone 14.</thetext>
  </long_desc><long_desc isprivate="0" >
    <commentid>1919557</commentid>
    <comment_count>5</comment_count>
    <who name="Madara Freimane">madara.freimane</who>
    <bug_when>2022-12-15 08:13:43 -0800</bug_when>
    <thetext>
Fixed =&gt; Bug is not reproducible anymore.
Tested device:
- iPhone 14, iOS 16.2, build: 20C65

Thanks!</thetext>
  </long_desc><long_desc isprivate="0" >
    <commentid>1926712</commentid>
    <comment_count>6</comment_count>
    <who name="Joyce Ma">joma</who>
    <bug_when>2023-01-19 14:14:57 -0800</bug_when>
    <thetext>This issue is still reproducible after the second PSTN call rejection on 16.2.

However, it is fixed for the initial call.

Are there any updates for this bug?</thetext>
  </long_desc>
      
      

    </bug>

</bugzilla>