Some apps that come pre-installed (e.g., calculator, Google Play™ Store, Verizon Cloud, Call Filter, etc.) on your Android™ device can't be uninstalled; however, they can be disabled (turned off) so they don't appear in the list of apps on your device.
The option to enable or disable an app may only be available for apps that can't be uninstalled.
From a Home screen, navigate: Apps icon > Settings > Apps (Device section).
Ensure All apps is selected at the top.
If necessary, tap the Dropdown icon (upper-right) then select All apps.
Locate then tap the app name (e.g., Cloud).
If system apps aren't visible, tap the Menu icon (upper-right) > Show system.