Why do WhatsApp messages only come when I log in - briefly?
The primary reason why WhatsApp messages are delayed and only arrive upon logging in is due to the app's data synchronization process. When you’re not actively using WhatsApp, it temporarily stops receiving real-time updates to preserve battery life and reduce data usage. Once logged back in, the app resumes its normal functioning and retrieves any pending messages.
Why do WhatsApp messages only come when I log in - in detail?
The phenomenon of WhatsApp messages only appearing upon logging in can be attributed to several factors related to the application's architecture and functionality.
Firstly, WhatsApp employs a push notification system that relies on continuous internet connectivity. When your device is offline or inactive, WhatsApp does not actively sync new messages until you log back into the app. This design choice helps preserve battery life and data usage by minimizing background activity.
Secondly, WhatsApp uses end-to-end encryption to ensure message security. Encrypted messages are stored on WhatsApp's servers until they can be securely delivered to your device. When you log in, the app decrypts the messages and displays them in your chat history. This process requires active engagement with the application to verify your identity and maintain data integrity.
Moreover, WhatsApp employs a mechanism known as "message queuing." Messages sent to you while you are offline or have not logged into the app recently are stored in a queue on WhatsApp's servers. Once you log in, these messages are delivered in sequence. This ensures that you receive all your messages in the correct order and prevents any loss of communication data.
Lastly, WhatsApp's architecture includes a feature called "last seen" status, which indicates when you were last active on the app. If your device has been idle for an extended period, WhatsApp may not update your status until you log back in. This can create the impression that messages are only delivered upon logging in, as your contacts might wait to send messages until they see you are active again.
In summary, the delay in message delivery until you log into WhatsApp is a result of the app's design focusing on battery efficiency, data security, and ensuring the accurate and secure delivery of messages.