It's a gray app showing gears that can be found on your Home Screen.;
, It's located in the third group of menu options.
 It's listed under Background App Refresh.
 If not, tap Restrictions and sign in with your Restrictions Passcode.
 You'll need to scroll to the very bottom of the menu to see it. It's listed under the Allow Changes heading.
 Now, if anyone using the iPhone goes to the Background App Refresh menu, all buttons will be grayed out. You will not be able to turn the Background App Refresh feature on or off without going back to the Restrictions menu and adjusting the setting.
Open your iPhone's Settings.
Tap General.
Scroll down and tap Restrictions.
Make sure Restrictions are enabled.
Scroll down and tap Background App Refresh.
Tap Don't Allow Changes.
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