Can't charge, can't power down
Suddenly developed a significant problem with my iPhone6+. It won't charge, tried multiple cables and connections. Nor will it power down. Holding the power button doesn't bring up the slider.
Anyone know what's going on, and what I can do?
Thanks very much.
MacBook Pro with Retina display, OS X Yosemite (10.10.4), Mid 2012 2.6G i7