WhatsApp behaviour without your address book is quite half-baked, perhaps intentionally to pressure you to giving it access. If you don't grant it access, it w

WhatsApp behaviour without your address book is quite half-baked, perhaps intentionally to pressure you to giving it access. If you don't grant it access, it won't let you associated any name with messages and conversations. Everything shows up with just its raw phone number, and the list of conversations is a list of raw phone numbers with messages, which makes it hard to know who messages are from.