WhatsApp not working with mobile data service After upgrading to Lollipop, I am facing the following problem with my Nexus 5 phone. Apps like WhatsApp, Hike, Messenger are not not working while mobile data is on, but there is no issue with my internet connection. But all these apps are working perfectly in WiFi environment.

I have not changed any setting tried rebooting the phone in safe mode with no result. Any suggestion will be highly appreciated.
Go to  settings&gt;more connection settings&gt;data monitor&gt;data control  or the equivalent of these settings on your phone. Once in data control check whether those apps that are not working are blocked and if so enable them to use network. This worked for me.