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My phone uses a large amount of mobile data
If your phone uses a large amount of mobile data, there may be several causes of the problem.
If automatic mobile data usage is turned on, your phone will use mobile data when the connection to the Wi-Fi network is poor.
Solution: Turn automatic use of mobile data on or off
1. Find "Wi-Fi"
Slide two fingers downwards starting from the top of the screen.
If notifications are turned on, your phone will use mobile data when applications send push notifications and is not connected to a Wi-Fi-network.
Solution: Turn notifications on or off
1. Find "Notifications"
Slide two fingers downwards starting from the top of the screen.
If automatic update of apps via mobile network is turned on, your phone will use mobile data.
Solution: Turn automatic update of apps on or off
1. Find "Auto-update apps"
Slide your finger upwards on the screen.