Disable "Hold & Accept" CallKit option

Is it possible to disable (or not show) the "Hold & Accept" option for an incoming second call with CallKit? I have a VoIP app in which some calls cannot be held. I would like to either not give the user the Hold & Accept option OR be able to somehow display to them that this will terminate the first call (or decline the second call depending upon the final implementation).

The CXCallUpdate has a flag for that but it looks that this flag is not working :-(


Ralph

To enable button

update.supportsHolding = true     update.supportsGrouping = false     update.supportsUngrouping = false

To disable button

update.supportsHolding = false     update.supportsGrouping = false     update.supportsUngrouping = false

Disable "Hold & Accept" CallKit option
 
 
Q