Why Your Android Phone Isn't Showing Notifications Even With Good Internet (Adaptive Battery Is Probably The Culprit)

I almost missed a really important call last month because my phone just... didn't buzz. No notification, nothing. My WiFi was working, my mobile data was fine, and I later found out even the Google push connection was working perfectly. So what was going on? Turns out the villain here wasn't my internet. It was a setting sitting quietly on my...