- #PHP SEND PUSH NOTIFICATION TO GCM TO ISO ANDROID#
- #PHP SEND PUSH NOTIFICATION TO GCM TO ISO DOWNLOAD#
#PHP SEND PUSH NOTIFICATION TO GCM TO ISO ANDROID#
To make sure that the connection remains active, Android will send a heartbeat every 28 minutes (which has recently changed to a dynamic value as per Google I/O 16) on mobile connection and every 15 minutes on Wifi ( source). GCM works by maintaining an idle socket connection from an Android device to Google's servers. User Not connected to GCM due to Network issues: A lot of customers are not connected to the Internet for a long time and hence GCM cannot deliver notifications to them as well cannot mark them inactive. we can only deliver to 1 out of 100 devices.ģ. For Mi & Lenovo 6000 series, we have found the failure rate to be around 98% - 99% i.e. The manufacturers are coming up with fixes in the new updates but for older versions, the problem persists. Device-specific issues: Some devices like Xiaomi are known to not receive notifications when apps are not running either in the foreground or background. Also, some battery-saving apps Force Stop the running apps which then won’t be able to deliver notifications to the user’s device.Ģ. The problem with this implementation is that GCM won’t invalidate the token neither it informs the app-server about this temporary de-activation. Notifications can be blocked by User at OS Level: Operating systems give users a choice to block the notification for a particular app. Here are a few examples that we have observed over time, on the issues surrounding push deliverability,ġ.
Why the notifications that are successfully sent to GCM were not delivered to the end-users? Our customers have asked us this question time and again that why some of their users are not receiving the notifications sent by them.
#PHP SEND PUSH NOTIFICATION TO GCM TO ISO DOWNLOAD#
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