S5 user here... I seem to be having a rather unusual issue whenever I disable my WiFi. I disable my WiFi when I'm at work (to save battery power since there's no WiFi there anyway) and I get my notifications as usual... however, after updating to Lollipop I've started noticing that I'm not getting any notifications during this time. As soon as I get home and re-enable WiFi I will get a huge influx of notifications (emails, social media, etc.) Thinking that maybe my mobile connection at work sucks, I disabled WiFi at home and, yet again, no notifications until I re-enable WiFi. I've checked to see if background data is on (it is), so I'm at a loss as to what's going on. Has anyone experienced this? Any solutions to this issue?
Actually looks like, after more testing, even if I have WiFi enabled and I'm not connected to a WiFi network then I will not receive any emails, social media notifications, sports notifications, nothing. I have checked background data yet again and it is on, so there should be no reason why I'm not receiving anything as I usually would on Mobile Data.