The phone is OnePlus3T. The oxygen OS build is 4.1.6. App receives notification when the app is in foreground on in background but in the memory. But does not receive notification when the app is not in memory i.e. swiped out of the memory. The notification is received on other devices having android OS verions 4.2, 5.1.1, 6.0.1, 7.1.1 Lineage OS even the app is not in the memory.
Kindly suggest something. Thanks in advance.