Android Question gcm problem in background mode

[juvanum]

Hello,
I tested GCM with the following devices:
-samsung Nexus Android 4.1.2
-samsung notes Android 4.1.2
-huawei P8 LITE Android 5.0.1

In visible mode (FOREGROUND) all devices receives notifications.
If the APP is not visible (BACKGROUD) GCM works well with NEXUS and NOTE but HUAWEI doesn't receive the notification.

It's a problem of Huawei device, or is it a problem of the Android version 5.0?
tnx

 

[juvanum]

solved: enable all options in SETTINGS, NOTIFICATION CENTRE