In iOS15 beta3 I get an incoming call. The text that I send as the caller is
Brad Smith (PBX:142}
When the incoming call screen appears it shows
142}
as the caller
If I look at the recent calls in the native phone App it shows it correctly as
Brad Smith (PBX:142}
I setup the caller CXHandle as follows...
locHandle = [[CXHandle alloc] initWithType:CXHandleTypeGeneric value:numToCall];
Note 1: Everything works fine on iOS14
Note 2: Just for info... I use this format for special internal calls so as when return a recent call from the Native phone App then it can figure out the number to dial by searching for {PBX: and using the digits after it.