I am facing delay in notifications for example: whatsapp, gmail, outlook, instgaram, viber etc, when phone is in standby for 5 minutes or more.
This is mainly happenig when phone is connected to wi-fi. I have made changes in each app like battery optimization, data usage and the rest that could affect delayed notifications but no success.
My another phone (huawei p20 lite) is connected to same wi-fi network and everything works fine, notifications shows up immedeately, and I didn't have to make any changes for each app.
Any solution to this problem, because it is very annoying.