WhatsApp Contacts Sync?

I just got WhatsApp, and had 50 contacts that already had it, some of my mums friends have it too. So she asked me to get it for her, so I downloaded the App and confirmed her number, I sent myself a message to test it, and it didn't come up with her name, it just came up with her number with +44 in it, even though all my contacts are saved as '07etc.' If I 'Add' her, it just adds the number again in the +44 format.. Why does it do that? Surely it should realise that I already have her number, like it did with my 50 other contacts during the initial setup?

It happened to me too. I got a message from a number. When I checked it, I realized it was already among my contacts. A bug maybe?

Have you tried forcing a sync - go to your favorites in WhatsApp and you can force a sync from the icon in the top left.

WhatsApp will sync every so often to check with the servers to see which of your contacts are registered as WhatsApp users.

Ah thanks! That's the fix :)

Didn't know that Sync button existed, I assumed WhatsApp should be able to work that out itself!

where is the sync button. i"ve had my z10 for a month now n i still dont have anyone in my contact list.

I dont have that sync button either! The icon on the top left is a whatsapp logo for "about". Damn Whatsapp sucks *** on bb10!