How To See Hidden Apps. Launch the hidden apps detector and let it scan if any installed app disguised without an icon. Click this and see what appears next.
You will see the list of apps which are disabled. Select the hidden apps which you want to show. Select the view tab and, in advanced settings, select show hidden files, folders, and drives and ok.
In order to remove system apps on android like google+, gmail, hangouts, follow the tutorial.
Or you can simply uninstall it to see all the locked. Visit to the app store on their phone and type in “vault app” or “hide photos” or “secret app.” Open the menu view and press task button. Or you can simply uninstall it to see all the locked.