Push notifications look simple. Someone writes a message, clicks Send, and a few moments later a banner appears on the user’s phone.
But quite a lot happens between these two moments.
The message has to travel through the backend, the appropriate push service, the operating system, and finally reach the application on the device. And when something goes wrong, the problem may not be with the message itself.
So let’s take a look at what happens to a push notification from the moment it is sent until it appears on the user’s phone.