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WhatsApp can now hide your IP address during calls
(www.theverge.com)
This is a most excellent place for technology news and articles.
If you care about privacy, you shouldn't be using WhatsApp anyway. Not when matrix/signal exist.
How are you convincing your contacts to move from WhatsApp?
I don't have WhatsApp on my phone. If they want to talk to me they have to use something else. Most use Telegram.
Or the option that happens in practice: You are just forgotten and people stop contacting you.
People don't like change, and will resist it. How much depends on the person.