Scott3612, device updates are suppose to help a device, not cause issues. Let me help to get this problem resolved with your iPhone 6 power cycling on and off for long periods of times. Did you do a soft reset or a hard reset on your device? What is the exact version of software that your phone updated to? Here's a link to assist you http://tiny.cc/o38u5x and post back with the details.
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Updated to the latest version of iOS 9. Did a hard reset I believe?? Erased all content and settings. When I talked to the Verizon store they said others have been having the same problem