I like the idea of the doze mode but don't like the fact that I cannot get messages through whatsapp unless I pick up the phone and manually check because the doze mode wont come through. I went into the battery optimization and put a check mark to exclude WhatsApp from dozing . Messages still didn't come through. I looked and maybe the wifi needed to be excluded but checking that box didn't help either. Anyone know how I can get my WhatsApp messages to come through. By the way, I have WiFi enabled instead of mobile data for when I am at home. Not sure if that makes a difference