Call Connection Delay When Accepting Calls in Various App States

[keshav-sf]

There is a noticeable delay when accepting a call in different app states (terminated, background, and foreground) in a Flutter application using the GetStream SDK.

Steps to Reproduce:

1. App in Terminated State:

   • Terminate the app (force quit or let it be in the background for a long time).
   • Receive an incoming call notification.
   • Accept the call.
   • Notice the delay before the call is connected.

2. App in Background State:

   • Send an incoming call while the app is running in the background.
   • Accept the call.
   • Notice the delay before the call is connected.

3. App in Foreground State (via Notification):

   • When the app is in the foreground, receive an incoming call notification.
   • Instead of accepting directly from the notification, click on it to open the screen with call details (accept/decline options).
   • Accept the call.
   • There is a delay before the call connects.

Device Information:

• Devices Tested:
  • iPhone 13, iPhone 15
• iOS Versions:
  • iPhone 13: 18.0.1
  • iPhone 15: 17.6.1
• Flutter Version: Flutter 3.24.3 (Stable)

Expected Behavior:
The call should connect immediately after being accepted, regardless of whether the app is in the background, terminated, or foreground state.

Actual Behavior:
There is a delay in connecting the call when the app is in terminated, background, or when accepting from the call screen in the foreground.

Additional Notes:

• When accepting the call directly from the notification in the foreground, the delay is significantly less.
• The issue seems to be more pronounced when the app is not in the foreground.