I cannot change the background app refresh settings on iPhone 7 Plus running iOS 10.2. The whole settings page is grayed out. Rebooting has not helped.
Thanks for asking the Apple Support Communities for help with Background App Refresh. I believe the reason you are experiencing it being grayed out is due to Restrictions. You can check this in Settings > General > Restrictions. This article will help: Use Restrictions on your iPhone, iPad, and iPod touch.
Thanks again for visiting the Apple Support Communities. Have a great evening.
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Background App Refresh is grayed out
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