dch54, we're stepping in to pick up that signal! Do you have issues with issues with connecting to a specific Wi-Fi connection or every device that you try to connect to?
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I'm have the latest iOS updates installed and am having the same issue with my iPhone 6. Happens both when I am connected to Wi-Fi or on 4G, where it appears I have a signal, but am unable to access new data or send/receive new text messages. I've tried resetting my network settings which did not fix the issue. Only fix I have found is to reboot the iPhone as well.