I am using Android 6 on a Samsung J7.
When I edit a contact there are several "Tabs" that can hold information, e.g., DEVICE, VIBER, WHATSAPP, etc.
For some contacts, I see two or three DEVICE Tabs (which seems puzzling to me), and two WHATSAPP Tabs (equally puzzling).
Why is this, and how can I get rid of repeated Tabs? (I suspect I would like to do this, but I am not sure)
Morevoer, for one contact (say, George T.), one of the WHATSAPP Tabs holds a phone number that is not shown as George T. in Whatsapp itself. On the contrary, this phone number shows both in Contacts - DEVICE Tab, and in Whatsapp, as belonging to John W. (the number belonged to George before, but not anymore).
WHy is this, and how can I fix it?