Open the iTunes App Store icon from the home screen on your device.
Tap the Updates button at the bottom of the screen
The list shown will indicate which apps have updates available and allow you to update PhoneGap Developer if a new version is available.
Android
Open the Google Play Store by tapping on the icon from the home screen.
Hit the menu button (three lines) located at the top right hand side of the screen and select My Apps.
The list shown will indicate which apps have updates available and allow you to update PhoneGap Developer if a new version is available.
Windows Phone
Open the Windows Store by tapping on the icon from the home screen.
Tap the 3 dots menu on the lower right, then choose settings from the drop-down.
Look for the App updates section and tap on the switch next to Update apps automatically to allow auto-update for all of your apps. Otherwise click the check for updates button and install the latest update if a new version is available.