You can update an app in Google Play Store.
Updating an app
Update the app by selecting an app or all apps in Google Play Store > Menu in upper left corner > My Apps > Installed > Update All.
• If you are using LTE data, the data fee can be levied or system may slow down due to background app installation.
• It is recommended to perform app update while connected to Wi-Fi in order to avoid any LTE data usage.