Notifications not showing up at all

[IHunter]

Hi guys, needs help with notifications not being popped up and not even shown in the notification tray. Few apps like X, WSJ, NYT , Bloomberg and other news apps. They work for few hours and stop sending notifications after a while. I am from an iPhone to Fold 6 to be finally free, now I'm facing issues with basic system functionalities, please help me in finding a solutions. 

I have tried all the basic troubleshooting steps like, Whitelisting apps to not sleep, Unrestricted battery, turn off DND, even cleared system cache partition. And Re-Booted the device once. And also turned off Doze mode through ADB

Also followed all steps in this https://www.samsung.com/us/support/troubleshoot/TSG10001486/?cid=mem-tsg

[MrSkip]

Have you tried going to settings-> Device care ->Diagnostics?
Not sure.If that will help but there are quite a few film function tests and some optimization you can do there.

[IHunter]

Thanks for the suggestion, Yes everything works fine.
Could someone please tell me is it common for Samsung phones to miss notifications from Twitter ?

[realaud]

Do you have notification categories turned on? Go to settings/notifications/advanced settings/manage notification categories for each app. Then return to the problematic apps' notification settings, tap on categories and turn on all the categories (if any) you want notifications for.

[IHunter]

Yes I have tried that as well !! Apps sends notifications for sometime and then no more

[realaud]

Have you deleted the phone's cache partition?

[IHunter]

Nothing that sort, could u please guide how to check ??

[realaud]

Power down your phone. Then boot it up by holding the power and volume up buttons until you see the Samsung Galaxy logo on the screen then let go of both buttons and quickly press the volume up key. The phone will boot to recovery mode. Navigate the menu by using the volume up/down buttons until you highlight "wipe cache partition". Select this by tapping the power button, confirm yes by same navigation/selection method. It will take about 2 seconds. After the partition is cleared, the reboot now option is highlighted. Tap the power button and the phone will boot normally. This usually helps most issues like this, as the cache just contains the uncleared remnants of installs and updates. It will not harm anything to clear it.

[IHunter]

😊Thanks for the detailed explanation, it's very helpful, I tried again now, after a while apps are not sending any new notifications, also tried it few days back same thing
The cache partition gets filled up or something like that !!, how can I ensure the cache partition be auto cleared ?

[realaud]

There is no way to auto clear the cache, but it seems unlikely that it's filling up so fast unless you are nearing the storage capacity of your phone. Check your phone's storage using the file manager. If you have less than 10% drive space remaining, you will need to uninstall some apps or offload photos (after backing them up somewhere), and empty trash. If you go to manage storage, you can see which type of apps are utilizung how much space. If your system file is larger than 14-18 GB, you will have to factory reset and restore your backup. The "other" category is normally the cache and should not be very large - maybe 6 gigs. If you do not see a large enough section of empty space, you are nearly full (the file manager will also say something like 115/128 used). You can also go into certain app's settings, like web browsers and social media, and empty their individual cache files (these files are not contained in the system cache and also must be cleared manually).