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I'd been using Norton Core w/no problems for months. Recently, my wireless connection slowed w-a-a-y down. After plugging my desktop (Win10) directly into the cable modem the speed was fine, so the problem is just wireless. Norton support had me reset the router and reinstall Norton Core app and setup the router again. Using my iPhone with latest iOS (11.0.2), I get to the setup screen that says, "Ensure Internet Connectivity," turn off wireless on the phone (I still have connectivity via Verizon). The "Next" button at the bottom of the page is grayed-out. When I click on it I get an error message "No Internet Connection." And that's the end of the install. Any suggestions on what I should try?