What should I do if the in-built applications of my device do not work?

a) Clear the cache of the app.
To clear this app’s cache: go to main menu->select “Settings”->“Apps”->select “View all apps”->select the app from the app list->select “Storage”->select “CLEAR DATA’ and “CLEAR CACHE”.*
b) Check if a third-party app with similar features is installed. If yes, please uninstall the third-party app.
c) Try to reset or update your device.
If the previously described options do not help, you can contact our hotline or repair center to get more professional technical assistance.

*The paths are for your reference only and may differ from your device operation interface.