This doesn’t work despite using 3 apple phones - the merge button doesn’t work.
Why won’t the add call, ‘merge’ work on my iPhone 11pro?
iPhone 11 Pro, iOS 14
Question marked as
SMS, MMS, WiFi Call, Call Forwarding, Call Waiting, Call Merge, Conference Call, Hotspot, Voice Mail (Visual or Normal) all are Carrier Specific features. Contact your Carrier (Cellular Service Provider), the agency who issued the SIM / eSIM to you.