What is DisplayPort? DisplayPort is a digital display and data transfer interface developed by the Video Electronics Standards Association (VESA) in 2006. Like its contemporary competitors, HDMI and Thunderbolt, it is a composite format capable of carrying video, audio, and data simultaneously.
Locked Home Screen. One meaning of the term locked iPhone refers to an iPhone with a locked home screen. All iPhones have a lock feature that allows a user to lock his home screen when the phone is not in use to prevent him from accidentally activating the touch screen while the phone is in his pocket.
If you see that, rotation lock is turned on. To turn it on or off, do the following: 1  In iOS 7 or higher, swipe up from the bottom of the screen to reveal Control Center. (In iOS 6 or lower, double tap the home button on the front of the iPhone or iPod touch.hat is, if you turn your iPhone on its side, in many apps, the screen will adjust to display lengthwise rather than heightwise. Sometimes, though, when you turn your iPhone or iPod touch, the screen doesn't move. In most cases, that's because you've got the screen rotation lock turned on.