It took a few years, but Facebook finally began collecting data from WhatsApp back in August of this year. The company publicly announced that this was happening and explained that this was being done to help fight spam in WhatsApp, but to also help find friends on WhatsApp. However, those in the UK and the European Union aren't fond of Facebook collecting data from WhatsApp, and has forced Facebook to stop collecting data from the messaging service, at least temporarily.
Facebook said in a statement today that they hope "to continue our detailed conversations with the ICO and other data protection officials, and we remain open to working collaboratively to address their questions." So this isn't a case of Facebook owning WhatsApp and just wanting to collect information from the largest messaging platform on the planet. They are looking to do it the right way, which also means respecting users' privacy, as they should be. The ICO's biggest issue with how this all played out, is the fact that 30-days to opt out of having information shared with Facebook is not enough time. So we may end up seeing the opt out become available again in the UK, and possibly in other countries. Of course, as soon as Facebook and the ICO figure out what the next course of action is, we'll be sure to share the information with everyone.