Notifications are not shown for most of the apps.

Work apps like Teams, Outlook notification are not at all works. No mail alerts , no call alerts ,  teams messages / mails  are not even shown until unless i open the app. 

Even whatsapp call / messages are only notified when app is active or delayed . Whatsapp call sometimes only showing as missed call.

I have tried reset all the app related settings, battery savings options etc.. but no luck.

Does any one facing the same issue? I didn't faced this issue for initial few months when I purchased this phone,  from past 4 months I started realising the notification issue emerges and now its got worse.

I also upgraded to android 15 now hoping it will be resolved. But still issue persist.

Help would be much appreciated 🙂