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You can set your phone to update apps automatically so you always have the newest versions installed.
1. Find "Auto-update apps"
Press the Play Store icon.
Press the menu icon.
Press Auto-update apps.
2. Turn automatic update of apps on or off
To turn on automatic update of apps using mobile network, press Over any network.
If you turn on automatic update of apps via mobile network, your apps are automatically updated via the mobile network when no Wi-Fi networks are within range.
To turn on automatic update of apps using Wi-Fi, press Over Wi-Fi only.
To turn off automatic update of apps, press Don't auto-update apps.
3. Return to the home screen
Slide your finger upwards starting from the bottom of the screen to return to the home screen.