Hi again,   So, here is my test after uninstalling samsung health. It did work for me for couple of days then I realized that it is getting delayed again. and today after ~5 days, the delay is back with 10 to 15 min delay in notificaitons. PNF was working good for me so, I would go for combination of both, installing PNF and uninstalling samsung health.   Good to know it is working for other, so, please keep giving the feedback if this is really the culprit.   regards ... View more

Just uninstalled Samsung Health as per albert9106's suggestion. Lets see how it goes. Will update in couple of days after test. BTW meanwhile for couple of months I am using PNF app to force notification check with 2 minutes heartbeat. And it is sort of working for me, at least I get notification max with only 2 min delay. Much better than several minutes to hours delay. ... View more

Info for Guys on the thread, I just noticed that under Developers Mode there is an otion "Running services". I was monitoring it for over a night and whenever I received delayed notifictions for whatsapp for example I quickly checked when exctly the service started and it says "30 seconds ago". This indicates that when phone is idle for long enough it is killing the whatsapp service hence no notificaiton. Same is with other applications.   So, just wanted to point this out if that give some direction to look for workaround or resoultion of this annoying issue. ... View more

I read all comments on this post, for some disabling doze worked to some extent, for some "Mobile Data always active" in developers mode worked and may be this paid application might worked for you, but I don't see anyone else from the people in comments for last 1 year reported that it worked for them. App rating 3.1 says it all as well.   I see it as a scam, so, made everyone aware of it. ... View more

Any solution to this issue yet?  ... View more

And now frauds coming in to misuse the issue to earn money. Stay away from the app mentioned by Dinozg, it's just a C R A P.   ... View more