Google Pixel 2
My phone uses a large amount of mobile data
Solution 3 of 3: Notifications are turned on
When you turn on notifications, you will be notified about various events such as new email messages, messages from social networks and calendar appointments.
Slide your finger downwards starting from the top of the screen.
Press the settings icon.
Press Apps & notifications.
Press the required app.
Press the upper indicator to turn the function on or off.
Press the Home key to return to the home screen.