Push notification at different use case & state

### Steps to reproduce

We develop an IM based on Element

"Push notification" is required due to various situations in IM communication

So we did some situational testing of "Push notification"

There are results

Currently Android has poor(?) results relative to iOS

### Outcome

the push notification not work for voice chat

if message chat the background is fail


### Your phone model

Samsung Galaxy S21 & ASUS zenfoone 7

### Operating system version

Android 12

### Application version and app store

element 1.4.34 (Android) & 1.8.27 (iOS)

### Homeserver

matrix.org

### Will you send logs?

No

### Are you willing to provide a PR?

No