The functions have their pros and cons, as by “Optimize” you prolong the use of the smartphone battery, but as a result, you block apps functions in the background. However, it is possible to modify this feature in the phone settings, and you can select which apps you want to “Optimize” and “Don’t optimize”. READ: How to Edit Audio Without Installing Anything and for Free Check if WhatsApp is not set to Background Stop From there, you can know if the feature is activated, so you can turn the option off. Then look for the “Battery Saver” option and select. To do this, go to the phone settings and touch the “Battery” tab. If it is, the idea is to disable the feature to try to solve the problem. Therefore, it is important to check if the saving mode is activated.

When WhatsApp stops working in the background, it will not be able to send notifications when it is closed, so the user can only see new messages when the application is opened.

However, the feature can block some phone functions, such as background app activities or even disabling the Internet connection. The latest mobile phones usually come with factory activated battery saving settings to improve smartphone battery life when the power level is low. Check if the phone is in battery saving mode

You can check out some solutions to modify smartphone settings, which should be enough to fix the malfunction. In the list below, Techidence presents 5 tips to solve the WhatsApp problem that only receives messages when the app is opened. It is also possible that Internet connection failures or apps that are supposed to improve Android’s performance may delay the notification receipt.

The error can occur due to issues from some phone settings, such as the battery saving function. WhatsApp may have a kind of bug that may stop it from receiving messages until the app is opened.

Zte open whatsapp