try selecting Background processing as well in Background modes:

it worked for me.

@mynameisguy I’ve been trying to make this fixes for a week now. What you mentioned didn’t work for me. Some more info from my specific case:

• The app gets killed after ~50 sec on a physical device.
• This issue only appears on iPhones older than iPhone 11 on iOS 13.x
• App doesn’t get killed if no audio is playing
• The app kill gives no errors the only logs in XCode are:

2019-12-15 18:28:15.601456-0500 myapp[5125:748493] Can't end BackgroundTask: no background task exists with identifier 30 (0x1e), or it may have already been ended. Break in UIApplicationEndBackgroundTaskError() to debug.
2019-12-15 18:28:35.321902-0500 myapp[5125:748493] Could not signal service com.apple.WebKit.WebContent: 113: Could not find specified service
2019-12-15 18:28:35.322155-0500 myapp[5125:748493] Could not signal service com.apple.WebKit.Networking: 113: Could not find specified service
Message from debugger: Terminated due to signal 9

• Console give the following log before app gets killed:

default	18:36:46.629603 -0500	myapp	63.082s [C15] path:cancel
default	18:36:46.630648 -0500	myapp	boringssl_context_message_handler(2257) [C15.1:2][0x11309aa80] Writing SSL3_RT_ALERT 2 bytes
default	18:36:46.630734 -0500	myapp	boringssl_context_handle_warning_alert(1892) [C15.1:2][0x11309aa80] write alert, level: warning, description: close notify
default	18:36:46.630799 -0500	myapp	boringssl_session_disconnect(539) [C15.1:2][0x11309aa80] SSL_shutdown 0
default	18:36:46.630984 -0500	myapp	nw_protocol_tcp_log_summary [C15.1:3] 
	[A38B87E0-D739-47D5-8119-5548DCC9E6F2 192.168.1.110:52105<->172.217.1.10:443]
	Init: 1, Conn_Time: 19.184ms, Syn's: 1, WR_T: 0/0, RD_T: 0/0, TFO: 0/0/0, ECN: 0/0/0, TS: 1
	RTT_Cache: kernel, rtt_upd: 28, rtt: 41.406ms, rtt_var: 13.750ms rtt_nc: 41.406ms, rtt_var_nc: 13.750ms
default	18:36:46.631500 -0500	myapp	nw_flow_disconnected [C15.1 172.217.1.10:443 cancelled channel-flow ((null))] Output protocol disconnected
default	18:36:46.631878 -0500	myapp	nw_connection_report_state_with_handler_on_nw_queue [C15] reporting state cancelled
default	18:36:46.631943 -0500	myapp	removing all entries config 0x28215ef00
default	18:36:46.632431 -0500	myapp	tcp_output [C15.1:3] flags=[F.] seq=2057468148, ack=3596502254, win=1024 state=FIN_WAIT_1 rcv_nxt=3596502254, snd_una=2057468085
default	18:36:46.632816 -0500	myapp	nw_protocol_boringssl_remove_input_handler(1012) [C15.1:2][0x11309aa80] nw_protocol_boringssl_remove_input_handler forced true
default	18:36:46.633219 -0500	myapp	nw_protocol_boringssl_remove_input_handler(1030) [C15.1:2][0x11309aa80] Transferring nw_protocol_boringssl_t handle back into ARC for autorelease
default	18:36:46.663985 -0500	myapp	tcp_input [C15.1:3] flags=[F.] seq=3596502254, ack=2057468149, win=340 state=FIN_WAIT_1 rcv_nxt=3596502254, snd_una=2057468148
default	18:36:46.668160 -0500	symptomsd	defusing ticker tickerFatal having seen progress by flow for app.myapp.ent, rxbytes 24029 duration 63.111 seconds started at time: Sun Dec 15 18:35:43 2019
default	18:36:48.336714 -0500	backboardd	Connection removed: IOHIDEventSystemConnection uuid:F268F4B0-ECC4-4ED1-AB76-4D29E17B5139 pid:5137 process:myapp type:Passive entitlements:0x0 caller:BackBoardServices: <redacted> + 380 attributes:{
    HighFrequency = 0;
    bundleID = "app.myapp.ent";
    pid = 5137;
} inactive:0 events:6 mask:0x800
default	18:36:48.337282 -0500	SpringBoard	[application<app.myapp.ent>:5137] Now flagged as pending exit for reason: workspace client connection invalidated
default	18:36:48.337582 -0500	symptomsd	Received (FATAL) CPU usage trigger: 
  myapp[5137] (/private/var/containers/Bundle/Application/B7B387EA-B291-4F12-B0EA-DBAA15FACF54/myapp.app/myapp) used 48.00s of CPU over 53.37 seconds (averaging 89%), violating a CPU usage limit of 48.00s over 60 seconds.
default	18:36:48.338317 -0500	runningboardd	XPC connection invalidated: [application<app.myapp.ent>:5137]
default	18:36:48.338858 -0500	symptomsd	Fatal RESOURCE_NOTIFY trigger for myapp [5137] (48000199875 nanoseconds of CPU usage over 53.00s seconds, violating limit of 48000000000 nanoseconds of CPU usage over 60.00s seconds)
default	18:36:48.342608 -0500	mediaserverd	AudioSession_SubServer.cpp:107:ClientDied: { "action":"client_died", "session":{"ID":"0x1f5e5","PID":5137,"name":"myapp"}, "details":null }
default	18:36:48.344371 -0500	mediaremoted	Client <MRDMediaRemoteClient 0x10584ba30, bundleIdentifier = app.myapp.ent, pid = 5137> invalidated.
default	18:36:48.356408 -0500	mediaremoted	[ExternalDeviceServer] Removing television endpoint for client <MRDMediaRemoteClient 0x10584ba30, bundleIdentifier = app.myapp.ent, pid = 5137>
default	18:36:48.356459 -0500	mediaremoted	[MRDNowPlayingOriginClient] Removing nowPlayingClient <_MRNowPlayingClientProtobuf: 0x104f51140> {
    bundleIdentifier = "app.myapp.ent";
    displayName = myapp;
    processIdentifier = 5137;
    processUserIdentifier = 501;
} for origin-Rick’s Phone-1280262988/client--0/player-(null)
default	18:36:48.356489 -0500	mediaremoted	Set: origin-Rick’s Phone-1280262988/client--0/player-(null) setting inferredNowPlayingClient from <<_MRNowPlayingClientProtobuf: 0x104f3f7d0> {
    bundleIdentifier = "app.myapp.ent";
    displayName = myapp;
    processIdentifier = 5137;
    processUserIdentifier = 501;
}> to <(null)>
default	18:36:48.356526 -0500	mediaremoted	[MRDNowPlayingOriginClient] ActiveNowPlayingClient changed from origin-Rick’s Phone-1280262988/client-app.myapp.ent-5137 (myapp)/player-MediaRemote-DefaultPlayer to origin-Rick’s Phone-1280262988/client--0/player-(null)
default	18:36:48.360688 -0500	mediaremoted	Set: origin-Rick’s Phone-1280262988/client--0/player-(null) setting computedNowPlayingClient from <<_MRNowPlayingClientProtobuf: 0x104f3f7d0> {
    bundleIdentifier = "app.myapp.ent";
    displayName = myapp;
    processIdentifier = 5137;
    processUserIdentifier = 501;
}> to <(null)>
default	18:36:48.360724 -0500	mediaremoted	Removing client <MRDMediaRemoteClient 0x10584ba30, bundleIdentifier = app.myapp.ent, pid = 5137>
default	18:36:48.361188 -0500	nanomediaremotelinkagent	Setting cached activePlayerPath origin-Rick’s Phone-1280262988/client-app.myapp.ent-5137 (myapp)/player-MediaRemote-DefaultPlayer -> origin-Rick’s Phone-1280262988/client--0/player-(null)
default	18:36:48.430419 -0500	CarPlay	Setting cached activePlayerPath origin-Rick’s Phone-1280262988/client-app.myapp.ent-5137 (myapp)/player-MediaRemote-DefaultPlayer -> origin-Rick’s Phone-1280262988/client--0/player-(null)
default	18:36:48.431121 -0500	mDNSResponder	[R45583] DNSServiceCreateConnection STOP PID[5137](myapp)
default	18:36:48.431234 -0500	runningboardd	[application<app.myapp.ent>:5137] Death sentinel fired!
default	18:36:48.432035 -0500	corespeechd	Setting cached activePlayerPath origin-Rick’s Phone-1280262988/client-app.myapp.ent-5137 (myapp)/player-MediaRemote-DefaultPlayer -> origin-Rick’s Phone-1280262988/client--0/player-(null)
default	18:36:48.448753 -0500	mediaserverd	Setting cached activePlayerPath origin-Rick’s Phone-1280262988/client-app.myapp.ent-5137 (myapp)/player-MediaRemote-DefaultPlayer -> origin-Rick’s Phone-1280262988/client--0/player-(null)
default	18:36:48.481703 -0500	callservicesd	Setting cached activePlayerPath origin-Rick’s Phone-1280262988/client-app.myapp.ent-5137 (myapp)/player-MediaRemote-DefaultPlayer -> origin-Rick’s Phone-1280262988/client--0/player-(null)
default	18:36:48.482571 -0500	contextstored	Setting cached activePlayerPath origin-Rick’s Phone-1280262988/client-app.myapp.ent-5137 (myapp)/player-MediaRemote-DefaultPlayer -> origin-Rick’s Phone-1280262988/client--0/player-(null)
default	18:36:48.483367 -0500	suggestd	Setting cached activePlayerPath origin-Rick’s Phone-1280262988/client-app.myapp.ent-5137 (myapp)/player-MediaRemote-DefaultPlayer -> origin-Rick’s Phone-1280262988/client--0/player-(null)
default	18:36:48.483612 -0500	wifid	Setting cached activePlayerPath origin-Rick’s Phone-1280262988/client-app.myapp.ent-5137 (myapp)/player-MediaRemote-DefaultPlayer -> origin-Rick’s Phone-1280262988/client--0/player-(null)
default	18:36:48.484102 -0500	homed	Setting cached activePlayerPath origin-Rick’s Phone-1280262988/client-app.myapp.ent-5137 (myapp)/player-MediaRemote-DefaultPlayer -> origin-Rick’s Phone-1280262988/client--0/player-(null)
default	18:36:48.484283 -0500	duetexpertd	Setting cached activePlayerPath origin-Rick’s Phone-1280262988/client-app.myapp.ent-5137 (myapp)/player-MediaRemote-DefaultPlayer -> origin-Rick’s Phone-1280262988/client--0/player-(null)
default	18:36:48.484514 -0500	BTAvrcp	Setting cached activePlayerPath origin-Rick’s Phone-1280262988/client-app.myapp.ent-5137 (myapp)/player-MediaRemote-DefaultPlayer -> origin-Rick’s Phone-1280262988/client--0/player-(null)
default	18:36:48.484798 -0500	assistantd	Setting cached activePlayerPath origin-Rick’s Phone-1280262988/client-app.myapp.ent-5137 (myapp)/player-MediaRemote-DefaultPlayer -> origin-Rick’s Phone-1280262988/client--0/player-(null)
default	18:36:48.485083 -0500	watchlistd	Setting cached activePlayerPath origin-Rick’s Phone-1280262988/client-app.myapp.ent-5137 (myapp)/player-MediaRemote-DefaultPlayer -> origin-Rick’s Phone-1280262988/client--0/player-(null)
default	18:36:48.486409 -0500	SpringBoard	Setting cached activePlayerPath origin-Rick’s Phone-1280262988/client-app.myapp.ent-5137 (myapp)/player-MediaRemote-DefaultPlayer -> origin-Rick’s Phone-1280262988/client--0/player-(null)
default	18:36:48.503307 -0500	mediaremoted	Setting cached activePlayerPath origin-Rick’s Phone-1280262988/client-app.myapp.ent-5137 (myapp)/player-MediaRemote-DefaultPlayer -> origin-Rick’s Phone-1280262988/client--0/player-(null)
default	18:36:48.519883 -0500	mediaremoted	Posting com.apple.MediaRemote.activePlayerPathDidChange because activePlayerPath changed from <origin-Rick’s Phone-1280262988/client-app.myapp.ent-5137/player-MediaRemote-DefaultPlayer> to <(null)>
default	18:36:48.522319 -0500	nanomediaremotelinkagent	Request: supportedCommands<CD7AC8DF-E6FF-4D2F-8F26-0D6865CE3EA8> for origin-Rick’s Phone-1280262988/client-app.myapp.ent-5137 (myapp)/player-(null)
default	18:36:48.522424 -0500	nanomediaremotelinkagent	Response: supportedCommands<CD7AC8DF-E6FF-4D2F-8F26-0D6865CE3EA8> returned <0 commands> for origin-Rick’s Phone-1280262988/client-app.myapp.ent-0 (myapp)/player-(null) in 0.0018 seconds
default	18:36:48.525155 -0500	CarPlay	Request: supportedCommands<69981A22-1C86-42B0-BFED-02DD7D12C248> for origin-Rick’s Phone-1280262988/client-app.myapp.ent-5137 (myapp)/player-(null)
default	18:36:48.529094 -0500	BTAvrcp	Request: supportedCommands<4D13FB97-F210-44BF-881A-80AF93208F49> for origin-Rick’s Phone-1280262988/client-app.myapp.ent-5137 (myapp)/player-(null)
default	18:36:48.529229 -0500	mediaserverd	Request: supportedCommands<DE4C1705-91B8-4C24-B0F3-62DE70515849> for origin-Rick’s Phone-1280262988/client-app.myapp.ent-5137 (myapp)/player-(null)
default	18:36:48.529800 -0500	callservicesd	Request: supportedCommands<F4AAFE8B-A43A-41F0-9754-2768BD2E1229> for origin-Rick’s Phone-1280262988/client-app.myapp.ent-5137 (myapp)/player-(null)
default	18:36:48.538106 -0500	mediaserverd	-CMSessionManager_NowPlaying- CMSMNP_UpdateNowPlayingApp: CMSession: Now Playing App is - app.myapp.ent and its state is - Stopped
default	18:36:48.543693 -0500	corespeechd	Request: supportedCommands<BE98EC17-051D-465B-8B32-CD8CADC21E08> for origin-Rick’s Phone-1280262988/client-app.myapp.ent-5137 (myapp)/player-(null)
default	18:36:48.544159 -0500	duetexpertd	Request: supportedCommands<04F69A21-EC63-4936-AC10-715830977296> for origin-Rick’s Phone-1280262988/client-app.myapp.ent-5137 (myapp)/player-(null)
default	18:36:48.544501 -0500	wifid	Request: supportedCommands<25657D5D-89F0-4CB2-A471-D20007793450> for origin-Rick’s Phone-1280262988/client-app.myapp.ent-5137 (myapp)/player-(null)
default	18:36:48.545925 -0500	assistantd	Request: supportedCommands<363FB1E4-54BE-493D-B142-2F7AAC918C58> for origin-Rick’s Phone-1280262988/client-app.myapp.ent-5137 (myapp)/player-(null)
default	18:36:48.550429 -0500	SpringBoard	Request: supportedCommands<7815FDFB-CEB0-41B6-8720-F76037F44BF8> for origin-Rick’s Phone-1280262988/client-app.myapp.ent-5137 (myapp)/player-(null)
default	18:36:48.551011 -0500	SpringBoard	application<app.myapp.ent> now playing with audio: NO
default	18:36:48.551682 -0500	runningboardd	Invalidating assertion 26-448-46341 (target:application<app.myapp.ent>) from originator 448
default	18:36:48.552009 -0500	mediaserverd	MEDeviceStreamClient.cpp:430:RemoveRunningClient: AQME device AQDefaultDevice: client stopping: <AudioQueueObject@0x101c7ac00; Unknown FigPlayer; sid:0x1f5e5, myapp(5137), 'prim'; play>; running count now 0
default	18:36:48.557479 -0500	mediaserverd	AudioSessionServerImp.cpp:4319:AudioSessionDestroySessionForPID: { "action":"destroy_session", "session":{"ID":"0x1f5e8","PID":5137,"name":"myapp","type":"Fig"}, "details":null }
default	18:36:48.557503 -0500	mediaserverd	-CMSessionMgr- cmsSetIsPlaying: CMSession: 'sid:0x1f5e5, myapp(5137), 'prim'' with [MediaPlayback/Default] [NonMixable] [System Music] stopping playing. Ringer switch state: OFF. Silent muted: false.
default	18:36:48.557538 -0500	mediaserverd	CAReportingClient.mm:470:-[CAReportingClient sendMessage:category:type:reporters:]: message {
    MXSessionVolume = "0.625";
    MXSessionVolumeCategory = "Audio/Video";
    MXSessionVolumeOperationProcess = "app.myapp.ent";
    MXSessionVolumeOperationTime = 99495;
    MXSessionVolumePlayingState = 0;
}: (
    124554051654
)
default	18:36:48.557712 -0500	mediaserverd	-CMSessionMgr- cmsSetIsActive: CMSession: 'sid:0x1f5e5, myapp(5137), 'prim'' with [MediaPlayback/Default] [NonMixable] [System Music] siriEndpointID: (null) going inactive 0 1
default	18:36:48.557793 -0500	mediaserverd	CAReportingClient.mm:470:-[CAReportingClient sendMessage:category:type:reporters:]: message {
    MXSessionVolume = "0.625";
    MXSessionVolumeOperationProcess = "app.myapp.ent";
    MXSessionVolumeOperationTime = 99495;
    MXSessionVolumePlayingState = 0;
}: (
    124554051654
)
default	18:36:48.557967 -0500	mediaserverd	-CMSUtilities- CMSUtility_SendSessionStateAndVolumeReportToAudioToolBox: CMSession: Stopping reporter for session : sid:0x1f5e5, myapp(5137), 'prim', reporter id = 124554051654
default	18:36:48.558260 -0500	powerd	Process mediaserverd.29 Released NoIdleSleepAssertion "MediaExperience.sid:0x1f5e5, myapp(5137), 'prim'(app.myapp.ent).isplaying" age:00:00:53  id:4295006231 [System: PrevIdle SysAct]
default	18:36:48.565258 -0500	runningboardd	Invalidating assertion 26-29-46338 (target:application<app.myapp.ent>) from originator 29
default	18:36:48.569353 -0500	watchlistd	Request: supportedCommands<64F1D41C-4CFF-43A5-95A4-C2F8AFF36467> for origin-Rick’s Phone-1280262988/client-app.myapp.ent-5137 (myapp)/player-(null)
default	18:36:48.572736 -0500	contextstored	Request: supportedCommands<38192DB8-B08C-48E0-8094-BABA8A6F24B3> for origin-Rick’s Phone-1280262988/client-app.myapp.ent-5137 (myapp)/player-(null)
default	18:36:48.573133 -0500	homed	Request: supportedCommands<D77AD539-894E-4D4F-8E80-40BB9EB74B40> for origin-Rick’s Phone-1280262988/client-app.myapp.ent-5137 (myapp)/player-(null)
default	18:36:48.573710 -0500	CarPlay	Response: supportedCommands<69981A22-1C86-42B0-BFED-02DD7D12C248> returned <0 commands> for origin-Rick’s Phone-1280262988/client-app.myapp.ent-0 (myapp)/player-(null) in 0.0486 seconds
default	18:36:48.593745 -0500	runningboardd	Removing process: [application<app.myapp.ent>:5137]
error	18:36:48.593871 -0500	runningboardd	RBSStateCapture remove item called for untracked item <RBProcessMonitorObserver: 0x102720d70; <RBProcess: 0x1024c90b0; 5137; identity: application<app.myapp.ent>>; configCount: 0>
default	18:36:48.593990 -0500	runningboardd	[application<app.myapp.ent>:5137] Deleting job: UIKitApplication:app.myapp.ent[fca3][rb-legacy]
default	18:36:48.594033 -0500	runningboardd	Removing job: <RBLaunchdJob: 0x1024cd140; pid=5137 UIKitApplication:app.myapp.ent[fca3][rb-legacy]>
default	18:36:48.594067 -0500	runningboardd	Removed job with label: UIKitApplication:app.myapp.ent[fca3][rb-legacy]
default	18:36:48.594109 -0500	runningboardd	Removing assertions for terminated process: [application<app.myapp.ent>:5137]
default	18:36:48.594164 -0500	runningboardd	Removed last relative-start-date-defining assertion for process application<app.myapp.ent>
default	18:36:48.595056 -0500	runningboardd	Calculated state for application<app.myapp.ent>: none (role: None)
default	18:36:48.595658 -0500	SpringBoard	[application<app.myapp.ent>:5137]* Setting process debug state to: NO
default	18:36:48.595710 -0500	SpringBoard	Application process state changed for app.myapp.ent: <SBApplicationProcessState: 0x2823c4180; pid: 5137; taskState: Running; visibility: Background>
default	18:36:48.623411 -0500	BTAvrcp	Response: supportedCommands<4D13FB97-F210-44BF-881A-80AF93208F49> returned <0 commands> for origin-Rick’s Phone-1280262988/client-app.myapp.ent-0 (myapp)/player-(null) in 0.1758 seconds
default	18:36:48.623715 -0500	contextstored	Response: supportedCommands<38192DB8-B08C-48E0-8094-BABA8A6F24B3> returned <0 commands> for origin-Rick’s Phone-1280262988/client-app.myapp.ent-0 (myapp)/player-(null) in 0.1765 seconds
default	18:36:48.629623 -0500	corespeechd	Response: supportedCommands<BE98EC17-051D-465B-8B32-CD8CADC21E08> returned <0 commands> for origin-Rick’s Phone-1280262988/client-app.myapp.ent-0 (myapp)/player-(null) in 0.1818 seconds
default	18:36:48.629656 -0500	duetexpertd	Response: supportedCommands<04F69A21-EC63-4936-AC10-715830977296> returned <0 commands> for origin-Rick’s Phone-1280262988/client-app.myapp.ent-0 (myapp)/player-(null) in 0.1825 seconds
default	18:36:48.629999 -0500	wifid	Response: supportedCommands<25657D5D-89F0-4CB2-A471-D20007793450> returned <0 commands> for origin-Rick’s Phone-1280262988/client-app.myapp.ent-0 (myapp)/player-(null) in 0.1852 seconds
default	18:36:48.633523 -0500	homed	Response: supportedCommands<D77AD539-894E-4D4F-8E80-40BB9EB74B40> returned <0 commands> for origin-Rick’s Phone-1280262988/client-app.myapp.ent-0 (myapp)/player-(null) in 0.1808 seconds
default	18:36:48.646952 -0500	suggestd	Response: supportedCommands<EC3153E9-FE72-4315-A06D-B90213F5EF43> returned <0 commands> for origin-Rick’s Phone-1280262988/client-app.myapp.ent-0 (myapp)/player-(null) in 0.1396 seconds
default	18:36:48.647153 -0500	SpringBoard	Response: supportedCommands<7815FDFB-CEB0-41B6-8720-F76037F44BF8> returned <0 commands> for origin-Rick’s Phone-1280262988/client-app.myapp.ent-0 (myapp)/player-(null) in 0.2371 seconds
default	18:36:48.648485 -0500	watchlistd	Response: supportedCommands<64F1D41C-4CFF-43A5-95A4-C2F8AFF36467> returned <0 commands> for origin-Rick’s Phone-1280262988/client-app.myapp.ent-0 (myapp)/player-(null) in 0.2116 seconds
default	18:36:48.650359 -0500	watchlistd	WLDPlaybackNowPlayingObserver: Now playing app did change to '(null)' (playing: 0) from 'app.myapp.ent'
default	18:36:48.654581 -0500	mediaremoted	Response: supportedCommands<34507DF8-9945-49D4-8231-B2784401ABC0> returned <0 commands> for origin-Rick’s Phone-1280262988/client-app.myapp.ent-0 (myapp)/player-(null) in 0.1303 seconds
default	18:36:48.660249 -0500	watchlistd	WLDPlaybackNowPlayingObserver: Now playing app did change to '(null)' (playing: 0) from 'app.myapp.ent'
default	18:36:48.667270 -0500	mediaremoted	Added PlayerPathInvalidationHandler 0x1058633c0 for origin-Rick’s Phone-1280262988/client-app.myapp.ent-5137 (myapp)/player-MediaRemote-DefaultPlayer
default	18:36:48.667549 -0500	mediaremoted	[MRDLockScreenController] Setting playerPath from origin-Rick’s Phone-1280262988/client-app.myapp.ent-5137 (myapp)/player-MediaRemote-DefaultPlayer to (null)
default	18:36:48.667643 -0500	mediaremoted	Cleared app.myapp.ent-5137 as possible now playing application.
default	18:36:48.671670 -0500	watchlistd	WLDPlaybackManager: enqueue for dsid <WLKPlaybackSummary: 0x102969670> {
    bundleID = "app.myapp.ent";
    channelID = "<null>";
    completionState = "In Progress";
    contentID = "85A4A50E-2F54-4A2E-BFA1-1EC5940F6910";
    currentPlaybackDate = "<null>";
    duration = "1322.388";
    elapsedTime = "62.95176589488983";
    isAlwaysLive = 0;
    isTimerDerived = 0;
    playbackRate = 0;
    playbackState = Stopped;
    playbackType = VOD;
    serviceID = "<null>";
    timestamp = "2019-12-15 23:36:48 +0000";
}: 1090826225
default	18:36:48.685986 -0500	watchlistd	WLDPlaybackManager: No channel associated with bundle ID: app.myapp.ent. Ignoring report
error	18:36:48.699616 -0500	runningboardd	RBSStateCapture remove item called for untracked item 26-448-46341 (target:application<app.myapp.ent>)
error	18:36:48.699668 -0500	runningboardd	RBSStateCapture remove item called for untracked item 26-29-46338 (target:application<app.myapp.ent>)
default	18:36:48.759527 -0500	symptomsd	defusing ticker tickerFatal having seen progress by flow for app.myapp.ent, rxbytes 5476 duration 58.562 seconds started at time: Sun Dec 15 18:35:49 2019

It seems the app gets killed because it uses too much CPU in background?

We’ve run into this same issue in our application. After some thorough debugging in XCode, we’ve found the issue to be messages being issued the native system from the useTrackPlayerProgress hook, as @zeritte mentioned above. The fix they suggested also works–making the sole parameter of the hook a number larger than the default of 1000. I used 50000 in my case, because the time to app crash turned out to be geometric to the increase in that value, i.e.: a value of 4000 crashed in the same amount (roughly) that the 1000 setting would, but 4800 would run for over 20 minutes before crashing, where 5000 seems to never crash. The value of 50000 should give us an interminal play period, and is probably overkill.

The root of this must be in the track player library. Aside from this duration parameter, there’s nothing else exposed through the API which we could be misusing.

Below is the code I used for the fix. It is very similar to @zeritte’s code:

  const [appState, setAppState] = useState('active')
  const appStateChange = appState => setAppState(appState)
  useEffect(() => {
    AppState.addEventListener('change', appStateChange)
    return () => AppState.removeEventListener('change', appStateChange)
  }, [])

  const { position, bufferedPosition } = useTrackPlayerProgress(
    appState === 'active' ? 1000 : 50000
  )

It is also worth noting that I found this impossible to duplicate on any iOS simulator target that I tried, both before and after the iOS 14.0 release that broke so many media-related things. I was also unable to reproduce it on an old iPad Mini 3 running iOS 12 that was tethered to my Mac via XCode.

It was working well on android but on iOS it was getting signal 9 error from xcode. The only reason was this hook and after editing it the error is gone. I update my screens by using position and duration values useTrackPlayerProgress hook provides. However, they (my screens) were getting updated unnecessarily when I go to background. So I implemented a simple logic:

const [appState, setAppState] = useState("active");
 useEffect(() => {
    AppState.addEventListener("change", appStateChange);
    return () => AppState.removeEventListener("change", appStateChange);
  }, []);

  const appStateChange = appState => {
    setAppState(appState);
  };

After getting app state information to state; I updated my component: const { position, duration } = TrackPlayer.useTrackPlayerProgress(appState !== "active" ? 5000 : 500); Meaning that it does not unnecessarily updates my component when app is in the background mode. Hope this helps!

This module does not work in background mode with iOS 13. Is there any plan to update it ? Or does anyone know another audio module that can work in background mode with iOS 13 ?

I had all of that stuff added too and it wasn’t working. All I had forgotten was TrackPlayer.setupPlayer(); so make sure the track player is initialized (even if the audio is already working!) because my audio worked, just not in the background, even though I forgot to initialize the track player.

I experienced this error and it is not related to the library. Please check your app’s performance thru xcode. In my case, I had a memory leak caused by useTrackPlayerProgress(500). After setting it to “1000”, the error is gone.

You do not need the Background Processing mode to be enabled for this react-native-track-player.

I can also confirm that background playback does work in my production app in iOS 13.

For those experiencing the issue, are you able to reproduce the issue using the example app?

Anyone an idea ? The extension looses its usefulness if not being able to play in the background! Is it working well for someone ?