Regarding "fined by the EU". They obviously transferred WhatsApp data to Facebook and vice versa. But I don't think that they necessarily store all of your WhatsApp messages somewhere in the cloud. Otherwise they could provide a similar easy, device independent solution like Telegram - instead of using the smartphone as a general pipe for all of the messages. So yeah...maybe they do and maybe they just don't want to tell us - but for now I am pretty confident that they would provide their user base with some kind of storing back end advantages.