[_ouxp]

On iOS you can actually deny access when the OS prompt comes up and WhatsApp will still work. You just have to start conversations using a phone number instead of a name/contact. I use it this way, and it is a little inconvenient but I feel better not uploading my phone book.

[WA]

While this is noble of you, I guess 99% of your (and mine) contacts won't do the same. So you're protecting your friends, while your own number is still shared with Facebook.

This is what annoys me the most. I can't control what people put in their address book about me (physical address, email, photo, phone number, maybe even more infos) and who they share my info with.