Why does my WhatsApp only work when I open the app?

When your phone has restricted background app usage or in battery saving mode or data saving mode etc, then WhatsApp or any other apps cannot run in background. That’s why when WhatsApp is not open, either WhatsApp server thinks your phone is in offline or simply the app cannot be run in background.

Why are my WhatsApp messages not delivering?

If you’re sure your phone is connected to the Internet, there are a few reasons why WhatsApp messages aren’t going through: Your phone needs to be restarted or turned off and on. The number of the contact you’re trying to message on WhatsApp hasn’t been saved correctly on your phone.

How does WhatsApp notification work?

WhatsApp sends a message containing your phone number and the port of the listening socket to the server and waits for an acknowledgement. The server records the phone and port numbers in the message and the IP address that the message came from. The server sends an acknowledgement to the app.

How do I allow WhatsApp to run in the background?

Turn on Background App Refresh Android users can long tap on the WhatsApp app icon to open app info. Go to Mobile data & Wi-Fi and toggle on Background data option.

How do I get WhatsApp to run in the background?

Make sure background data is not restricted Open your phone’s Settings app > Apps > WhatsApp > Data usage. Make sure background data is not restricted.

How do I keep WhatsApp running in the background?

Why is message sent but not delivered?

The recipient might have quickly read your message from the notification or status bar, but the app will not mark it as delivered or seen until the recipient actually opens the conversation with you. Or it’s just that the recipient has deliberately ignored your message.

How does WhatsApp stay in background without being closed?

Now, apps such as WhatsApp, Facebook uses something called Service and Push notification mechanisms. Service allows app to run some code run in background and even though if App is Killed by OOM Killer, Service can be restarted again by Android when sufficient memory is available to make it run.

How do I get WhatsApp to notify me of new messages?

Open WhatsApp > tap Settings> Notifications. Review that Show Notifications is enabled for Message and Group Notifications.

What happens when an app is placed in the background?

When an app goes into the background, it has a window of several minutes in which it is still allowed to create and use services. At the end of that window, the app is considered to be idle. At this time, the system stops the app’s background services, just as if the app had called the services’ Service.stopSelf () methods.

Why can’t I run a service in the background on Android?

After Android Oreo, Google introduced some background limitations. Therefore, this solution above won’t work probably. When a user kills your app from task manager, Android System will kill your service as well. If you want to run a service which is always alive in the background.

Why does Android kill background processes?

Android usually kills background processes if they do not have a persistent notification. Why do apps like whatsapp and Facebook not get killed? Stack Exchange Network

How do I stop apps from running on background services?

Tap the Recent apps button on your phone and swipe up to close any app individually. However, this doesn’t necessarily stop their background services and processes from running.