GCM push notification is not showing in some devices when app is not running

Question

I am implement GCM Push Notification in my app and its successfully done but in some devices it not show notification when app is close.

List of device which notication

Answer 1

Facing the same issue, the only things we did are to educate xiaomi users to do the steps as @anup-dasari mentioned, and set the gcm priority to high, with possibility to have persistent service in the future