WhatsApp not working with mobile data S7 Edge I use a Samsung Galaxy S7 Edge with Android 6.0.1 . My WhatsApp works perfectly over wifi, However when I switch to mobile data it stops working. 

I have Googled and found some "solutions" that do not work and have things to do with APN manipulation. Other "solutions" found on Google only seem to have worked on older Android versions, but have no effect here. I want to know what's wrong and how to fix this problem
Please check if you have installed/ pre-installed any firewall app, which is preventing WhatsApp from using mobile data.