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You can set your phone to update apps automatically so you always have the newest versions installed.
1. Find "Play Store"
Press the main menu icon.
Press Play Store.
2. Turn automatic update of apps on or off
Slide your finger right starting from the left side of the screen.
Press Auto-update apps.
Press Auto-update apps over Wi-Fi only to turn on the function.
Press Do not auto-update apps to turn off the function.
3. Return to the home screen
Press the Home key to return to the home screen.