Black lines often flash across the screen of iPhone7plus.

Just close the button to lock the phone's straight screen and you can rotate the screen freely.

The specific steps to solve the frequent flash of black lines on the iPhone7 plus screen are as follows: You just need to close the button to lock the phone's straight screen and rotate the screen freely. As shown below, the button circled in this figure can be closed.

First of all, iPhone 7 Plus is an upgraded version of Apple 7, which was released at the Apple Autumn New Product Launch Conference on September 8, 20 16, Beijing time. On September 9th, 20 16, the reservation was opened, and 16 officially went on sale in China.

The current iPhone 7 Plus has a screen size of 5.5 inches, a rear dual camera, and12 million pixels. The blur effect is natural, the brightness is increased by 25%, and the color display is better. The speakers are upgraded to stereo speakers. The 3.5mm headphone jack was cancelled, and a brand-new headphone Apple AirPods was introduced.