It looks like WhatsApp will be next on the chopping block as part of China’s push for cyber sovereignty.
Facebook.
YouTube. 
WhatsApp???
That can be explained that Facebook has transferred its cloud server from IBM to their own for WhatsApp messages to save $2 million/month rental. Since Facebook was blocked in China, WhatsApp also get affected.
A great deal of mainland-based users reporting that voice messages and pictures can no longer be sent through the app, though text can still be sent and received. And all services appeared normal when connected to a VPN.
Multiple people report that attempts to access the WhatsApp website were unsuccessful, though a firewall testing service suggests it has not been blocked.
Will WhatsApp be fully blocked in the near future?
That’s hard to say!
It’s possible the Facebook-owned app is facing a Gmail-style takedown.
Even after the main Google site was blocked, Gmail remained accessible until around December 2014 – but with bandwidth throttled, meaning slow connections that pushed users to migrate to other mail services.
There is no official announcement whether whatsapp is banned or not currently. We certainly hope not since it's an important way for many expats in China to connect with their friends and family members.
HACOS will update the latest news for you on that!
Source: that'sPRD
HACOS,Business Services Solutions Master