Push notifications dont work properly

[Uncle_Boris]

Hello! Ive got a problem with my push notifications on incoming messages in Whats App, Hangouts, mail applications.
I do not receive any notification either when z3 is in sleep mode or active. Moreover, i only receive new messages when i open respective application. Even if i have it running but not active at the moment, i dont receive any notifications unless i switxh to the app and check a chat or inbox manually. Please help solve the issue.

[Uncle_Boris]

Hi again, i now have the same problem. What could be the reason behind it and how to avoid it in future?
Actually I would like it to be fixed in coming updates, as it is really annoying - I often miss very important notifications.

[_alexdon_]

You should contact your network.

[Uncle_Boris]

Hello!
Previously i wrote about a problem of not receiving push norifications from my apps (like hangout, whatsapp) when using mobile data. With wifi everyrhing works fine.
The priblem has appeared again.Ive tried reloading vpn setting several times as was suggested by moderators, but this doesnt help anymore. Please help.

[Johan]

Sorry to hear that.

Like alex suggested you should contact your network operator to check your APN settings and or try using another SIM card.

There can be a problem with the network operators proxy (if you use any) within your APN settings. You can try to remove any proxy details and check if it works.

[Uncle_Boris]

Johan, I've changed my sim-card - that did not help. How can i check my APN and what spwcifically should be fixed? And how can i remove proxy details?

[Johan]

If you open up your APN settings in the phone you will find some proxy details. Try to remove those and save the settings.

You should also double check your APN settings with your network operator.

[Uncle_Boris]

Johan, hello,
I dont use proxy, so nothing to remove.
Ive double checked apn settings with my network provider - didnt help, i still do not receive any notifications. What elseyou could suggest?

[Johan]

If it works via Wi-Fi but not via Mobile networks it must be something related to your network operator.

But before jumping to any conclusion, do you have Stamina mode activated or any other power saving options? If not then you can continue to troubleshoot this by trying another SIM card.

[Uncle_Boris]

Hi again, no these modes are switched off and i dont use them.

As i wrote previously, ive already changed my previous sim card for a new one, spefically for this issue, but it didnt help.