iPad Air 2 will not rotate
Just received my Apple iPad Air 2 and have had problems not experienced with previous iPad. It is stuck on landscape and does't change to portrait position when tablet is turned. There is no button for rotation and nothing in Settings to turn it on. I've tried pressing 'on' button and off button, holding them down for 10-15 seconds to bring up Apple logo, but this hasn't worked. Anyone know how to correct the problem?
iPad Air 2 Wi-Fi, iOS 8.1