You can delete the apps you downloaded from Google Play Store, the carrier's market or LG Smart World.
Uninstalling an app
1. Lollipop OS: Menu(apps)> Settings> Select 'General' tab> Apps> Downloads> Select the app to be deleted> Uninstall.
2. Mashmallow OS: Menu(apps)> Settings> Select 'General' tab> Apps> Downloads> Select the app to be deleted> Uninstall.
• Press and hold the app to be deleted in the Home screen and drag it to 'Uninstall' at the top and select 'Yes.'
• Select Google Play Store> My Apps and Games> Delete. Select an app to delete and click Delete.