I want to FaceTime, but can only WhatsApp I've installed WhatsApp on my phone, and now I only have the option to make WhatsApp video calls - not FaceTime.

Sadly, they almost never work (for some reason??). When I use my partner's phone, FaceTime always works.

How do I make a FaceTime video Call rather than WhatsApp?
Press and hold the buttons that are currently labeled as WhatsApp and it should give you a choice on which App you call from for this contact.

It should remember your choice after selecting.