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iMore Question
I upgraded my iphone 5s with ios 7.0.4 to a iphone 6s Plus. When activating (at&t), the 6s+ gets to a point where the screen has the "slide to upgrade" at the bottom, but won't slide. I have "soft start rebooted" several times. I did back my 5s up to the cloud prior to activating the 6s+.