Who's they? Because Whatsapp has never said it uses end to end encryption - anywhere.

Also, I guess it is possible that the so called terrorists used iPhones, but I think there's a higher chance they used Android phones. Of course we don't know exactly, but either way you shouldn't have assumed Whatsapp uses end-to-end encryption even before this.

So those who thought Whatsapp was "safe", treat this as yet another warning sign that you shouldn't be using it for private conversations.

Those who were already paranoid about it, you probably weren't using it already for that, so this changes nothing.

> Because Whatsapp has never said it uses end to end encryption - anywhere.

They most certainly did:

http://www.wired.com/2014/11/whatsapp-encrypted-messaging/

Why do you think it's more likely they used Android phones ?

As of May 2015, iOS has 53.5% of the mobile market Android 41.7% (in Belgium) - source: http://howwebrowse.be/

I want to add that not only the price is crucial but a bit of security. Using a closed OS with belief you're not being tracked? Well, they are not so stupid. The best choice for such things is a chinese no-name-smartphone on Android or just an old Nokia on Symbian^3 or 9.4.

My guess would be price, especially if they're periodically changing phones to reduce their chances of surveillance. OTOH maybe they weren't doing that.

> Because Whatsapp has never said it uses end to end encryption - anywhere.

Good point, thanks