App getting terminated as the app enters background state. No crash logs are generated. I have collected this log from Console(Mac app)by connecting iPhone and sending my app to background. There is no meaningful reason or code I can get from the logs. Can you please help me with what does 'explanation:BG Kill Demo ' means ? My app is a VoIP app. App depends on voip apns notifications to receive information about new Voip calls from server. I am posting the logs collected from console app here. default 14:29:55.265590-0400 audiomxd -CMSessionMgr- CMSessionMgrHandleApplicationStateChange: Sending stop command to com.myapp.bundleid with pid '2933' because client is background suspended and there is no AirPlay video session for it default 14:29:55.265753-0400 dasd Received state update for 2933 (app<com.myapp.bundleid(AD9F24FF-321B-48U6-895F-723CDA943372)>, running-suspended-NotVisible default 14:29:55.265908-0400 locationd Received state update for 2933 (app<com.myapp.bundleid(AD9F24FF-321B-48U6-895F-723CDA943372)>, running-suspended-NotVisible default 14:29:55.265994-0400 locationd {"msg":"invoking applicationStateChange handler", "StateChangeData":"{\n BKSApplicationStateAppIsFrontmost = 0;\n BKSApplicationStateExtensionKey = 0;\n SBApplicationStateDisplayIDKey = "com.myapp.bundleid";\n SBApplicationStateKey = 2;\n SBApplicationStateProcessIDKey = 2933;\n SBMostElevatedStateForProcessID = 2;\n}"} default 14:29:55.266083-0400 locationd {"msg":"Post Application State Change Notification", "notification":"BackgroundTaskSuspended", "pid":2933, "bundleId":"com.myapp.bundleid"} default 14:29:55.267019-0400 locationd {"msg":"#CLIUA AppMonitor notification", "notification":"BackgroundTaskSuspended", "pid":2933, "bundleId":"com.myapp.bundleid", "ClientKey":"icom.myapp.bundleid:"} default 14:29:55.267061-0400 locationd {"msg":"skip erasing #CLIUA for RunningBoard Process State. Does not exists", "bundleId":"com.myapp.bundleid"} default 14:29:55.267678-0400 watchdogd Received state update for 2933 (app<com.myapp.bundleid(AD9F24FF-321B-48U6-895F-723CDA943372)>, running-suspended-NotVisible default 14:29:55.267765-0400 useractivityd Received state update for 2933 (app<com.myapp.bundleid(AD9F24FF-321B-48U6-895F-723CDA943372)>, running-suspended-NotVisible default 14:29:55.267934-0400 symptomsd Received state update for 2933 (app<com.myapp.bundleid(AD9F24FF-321B-48U6-895F-723CDA943372)>, running-suspended-NotVisible default 14:29:55.267982-0400 wifid Received state update for 2933 (app<com.myapp.bundleid(AD9F24FF-321B-48U6-895F-723CDA943372)>, running-suspended-NotVisible default 14:29:55.268228-0400 UserEventAgent Received state update for 2933 (app<com.myapp.bundleid(AD9F24FF-321B-48U6-895F-723CDA943372)>, running-suspended-NotVisible default 14:29:55.268275-0400 callservicesd Received state update for 2933 (app<com.myapp.bundleid(AD9F24FF-321B-48U6-895F-723CDA943372)>, running-suspended-NotVisible default 14:29:55.268338-0400 WirelessRadioManagerd Received state update for 2933 (app<com.myapp.bundleid(AD9F24FF-321B-48U6-895F-723CDA943372)>, running-suspended-NotVisible default 14:29:55.269217-0400 runningboardd Acquiring assertion targeting [app<com.myapp.bundleid(AD9F24FF-321B-48U6-895F-723CDA943372)>:2933] from originator [osservice<com.apple.dasd>:76] with description <RBSAssertionDescriptor| "DAS: Application is docked." ID:33-76-44901 target:2933 attributes:[ <RBSDomainAttribute| domain:"com.apple.dasd" name:"DockApp" sourceEnvironment:"(null)"> ]> default 14:29:55.269572-0400 runningboardd Assertion 33-76-44901 (target:[app<com.myapp.bundleid(AD9F24FF-321B-48U6-895F-723CDA943372)>:2933]) will be created as active default 14:29:55.270431-0400 runningboardd [app<com.myapp.bundleid(AD9F24FF-321B-48U6-895F-723CDA943372)>:2933] Set jetsam priority to 30 [0] flag[1] default 14:29:55.270658-0400 runningboardd Calculated state for app<com.myapp.bundleid(AD9F24FF-321B-48U6-895F-723CDA943372)>: running-suspended (role: None) (endowments: (null)) default 14:29:55.273005-0400 runningboardd Received termination request from [osservice<com.apple.dasd>:76] on <RBSProcessPredicate <RBSProcessHandlePredicateImpl| app<com.myapp.bundleid(AD9F24FF-321B-48U6-895F-723CDA943372)>:2933>> with context <RBSTerminateContext| explanation:BG Kill Demo reportType:None maxTerminationResistance:Interactive> default 14:29:55.274715-0400 runningboardd Executing termination request for: <RBSProcessPredicate <RBSProcessHandlePredicateImpl| app<com.myapp.bundleid(AD9F24FF-321B-48U6-895F-723CDA943372)>:2933>> default 14:29:55.275034-0400 runningboardd [app<com.myapp.bundleid(AD9F24FF-321B-48U6-895F-723CDA943372)>:2933] Terminating with context: <RBSTerminateContext| explanation:BG Kill Demo reportType:None maxTerminationResistance:Interactive> default 14:29:55.275122-0400 runningboardd [app<com.myapp.bundleid(AD9F24FF-321B-48U6-895F-723CDA943372)>:2933] terminate_with_reason() success default 14:29:55.275768-0400 SpringBoard [app<com.myapp.bundleid(AD9F24FF-321B-48U6-895F-723CDA943372)>:2933] Workspace connection invalidated. default 14:29:55.275790-0400 SpringBoard [app<com.myapp.bundleid(AD9F24FF-321B-48U6-895F-723CDA943372)>:2933] Now flagged as pending exit for reason: workspace client connection invalidated default 14:29:55.275815-0400 backboardd Connection removed: IOHIDEventSystemConnection uuid:C2525EA6-A052-480B-B83D-4BD62C29C6EC pid:2933 process:MyApp type:Passive entitlements:0x0 caller:BackBoardServices: + 280 attributes:{ HighFrequency = 1; bundleID = "com.myapp.bundleid"; pid = 2933; } state:0x1 events:9 mask:0x800 dropped:0 dropStatus:0 droppedMask:0x0 lastDroppedTime:NONE default 14:29:55.275988-0400 backboardd Removing client connection <BKHIDClientConnection: 0xd43cd1f40; IOHIDEventSystemConnectionRef: 0xd415d5800; vpid: 2933(v1C3E); taskPort: 0x84D8B; bundleID: com.myapp.bundleid> for client: IOHIDEventSystemConnection uuid:C2525EA6-A052-480B-B83D-4BD62C29C6EC pid:2933 process:MyApp type:Passive entitlements:0x0 caller:BackBoardServices: + 280 attributes:{ HighFrequency = 1; bundleID = "com.myapp.bundleid"; pid = 2933; } state:0x1 events:9 mask:0x800 dropped:0 dropStatus:0 droppedMask:0x0 lastDroppedTime:NONE source:HID default 14:29:55.288098-0400 runningboardd [app<com.myapp.bundleid(AD9F24F321B-48U6C7-895F-723CDA943372)>:2933] termination reported by launchd (15, 0, 9) default 14:29:55.289192-0400 runningboardd Removing process: [app<com.myapp.bundleid(AD9F24F321B-48U6C7-895F-723CDA943372)>:2933] default 14:29:55.289331-0400 runningboardd Removing launch job for: [app<com.myapp.bundleid(AD9F24F321B-48U6C7-895F-723CDA943372)>:2933] default 14:29:55.289582-0400 runningboardd Removed job for [app<com.myapp.bundleid(AD9F24F321B-48U6C7-895F-723CDA943372)>:2933] default 14:29:55.289706-0400 runningboardd Removing assertions for terminated process: [app<com.myapp.bundleid(AD9F24F321B-48U6C7-895F-723CDA943372)>:2933]

I am working on a VoIP based PTT app. Uses 'voip' apns notification type to get to know about new incoming PTT call.  When the app is in foreground, the app gets to know about incoming VoIP PTT call through incoming push notification. After receiving notification, the app receives audio from the server. This works properly, as expected. The app faces issues in receiving apns notifications only when the app is in background. Issue: My app is in background and iPhone locked, the server sends apns notification to the target iPhone about a new incoming VoIP call. Server received 200 success response code from APNS. But the app in background did not receive the notification. Second time, the server sends notification about second VoIP call. App did not receive notification. Third time, server sends notification about 3rd incoming call. This list goes on. Everytime server sends a notification to the target phone, success response is received from APNS. 
 Now, bring the app to foreground, the app receives all the pending notifications at once. This scenario happens only in a few phones. Those customers are missing PTT calls.
Can you please provide us suggestions to solve this issue ? My app uses unrestricted-voip entitlement

I am working on a VoIP based PTT app. Uses 'voip' apns notification type to get to know about new incoming PTT call. When my app receives a PTT call, the app plays audio. But the call audio is not heard. While checking the phone volume, the API [[AVAudioSession sharedInstance] outputVolume] returns 0. But clearly the phone volume is not zero. On checking the phone volume by pressing side volume button, the volume is above 50%. This behavior is observed in both app foreground and background scenario. Why does the API return zero volume level ? Is there any other reason why the app volume is not heard ?