I have a new iPhone SE 2020 (same software & processor at iPhone 11).
I have Message+ installed, WiFi Calling OFF.
I'm on a call and another call comes in three options are presented: Accept & End, Dismiss, Accept & Hold. If I select either Accept & End, or Accept & Hold the incoming call goes to voicemail and the current call hangs up.
Once I remove Message+ from the iPhone the normal call waiting behavior resumes.
Anyone else have this issue?
Any way to raise it with Message+ development.