I checked every setting in the phone. I have allowed notifications to come through when the screen is locked but I don't get any. When I unlock my phone I get all the notifications at once. Please help me to fix this issue. Thanks
Do you have any apps in sleep or deep sleep. I know sometimes this can delay your notifications. Always leave the most important apps and don't put them in sleep or deep sleep. One thing you can try is to turn off notifications, reboot your device. Then once powered back up turn back on notifications.