Summary
This article describes limitations that apply to Mobile Client running on iOS 13 and later when the app is not on the active screen.
Private Calls
• A Mobile Client running in the background or in sleep mode cannot receive Private Calls.
• An incoming Private Call will be rejected and a missed call notification will appear.
Group Calls
• Group Calls are delivered even if the app is in the background, as long as the device is subscribed to the corresponding group.
Additional iOS Restrictions
• External Bluetooth PTT accessories do not work when the app is in the background or the device is in sleep mode.
• Audio cannot be played in the background and only push notifications are delivered.
• iOS does not allow the application to enable a Wake on incoming PTT Call setting.
• With TLS encryption enabled, the mobile client disconnects from the server 30 seconds after going into the background and re-establishes the connection upon returning to the foreground.
Limitations Overview
| Feature | Availability |
|---|---|
| Incoming Private Call | ✖ |
| Incoming Group Call | ✔ |
| External Bluetooth PTT | ✖ |
| Audio playback | ✖ |
| Wake on incoming PTT Call | ✖ |
| Push notifications | ✔ |