Answers. Best Answer: Double click the home button, slide the bottom bar to the left, and make sure portrait orientation lock is turned off. This keeps the iPhone from turning sideways. If the whole screen turns sideways except for the keyboard, again do the above step, and do what Pele said, turn it off and on again.nswers. Best Answer: Double click the home button, slide the bottom bar to the left, and make sure portrait orientation lock is turned off. This keeps the iPhone from turning sideways. If the whole screen turns sideways except for the keyboard, again do the above step, and do what Pele said, turn it off and on again.