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does WhatsApp still require you to hand over all your contacts to them when you sign up?

None of my contacts gave consent for me to share their private information.

on iPhone you can refuse and it still works. source i use whatsapp this way

No, you don't have to give them your contacts, but doing so makes it easier to contact people

I was recently forced to install WhatsApp, and it absolutely forced me to give it my contact list.