Notifications comes only after network change.

So i’ve been testing voip calls of my app. One weird issue i noticed is that after few calls iphone stops receiving voip notifications. actually not just voip notifications but notifications from every other apps.

i have two wifi networks at my home. when i switch from one network to other then suddenly voip notifications starts working and if there were any pending notification from other apps then those arrives too as soon as i change the network. Again i test calls few times and it works. then again same issue. if voip notifications doesn’t works then i just switch the network and notifications works.

wondering if its iphone issue or ios or the router configuration thats delaying or preventing the notification from coming in.

Notifications comes only after network change.
 
 
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