Why did the 5 small dots on the iPhone 7 mobile phone signal become 5 vertical bars?

Because you have updated the mobile phone system to iOS11, the change in iOS11 is to change the original small dots into a vertical bar signal display.

iOS 11 is an operating system developed by Apple. At 1 a.m. on June 6, 2017, Beijing time, the Apple Developer Conference WWDC2017 was held at the McEnery Convention Center in San Jose, California, where the Apple system iOS 11 was officially unveiled.

Practical functions:

Dynamic effects

Dock can appear on the interface of any application, just swipe it out from the bottom of the screen. Long press an app icon to drag it over the app you are using.

In other words, two applications will be displayed on the screen at the same time. Drag the edge of an application again, and the interface will evolve into a 1:1 or 1:2 split screen. There are some details in the process of this operation, such as dragging the application border, the one with the larger interface will shrink inward at the edge - this is telling you that it is about to shrink and another application is about to appear next door.

Dynamic special effects

For example, when recording a screen, click it and you will see a countdown from 3 to 1 before it starts recording; the battery icon will turn yellow when you click it. Used to enable power saving mode. In more cases, long pressing the icon will enter a secondary page, such as screen brightness adjustment. This allows you to see changes in brightness more intuitively.

Lock screen

Apple Music takes up less space on the lock screen. It becomes a card that displays the song title and control buttons. Originally, Music would occupy the entire lock screen, and some third-party apps would also display scrolling lyrics here. It looks a little fresher now.

Search order

Use the application method to type keywords in Spotlight, followed by a drop-down menu of recommended keywords, address books, text message content, etc., in Below are the applications related to this keyword. On iOS 10, the order is reversed. Also, Spotlight will always be on the left side of the home screen, which is the interface where various plug-ins are placed.

Module changes

Apple Music is a bit special in the control center. If you press and hold, you will see that this box not only displays the name of the song being played, but also the paused playback and previous and previous songs. button, and there is a small signal icon in the upper right corner, which allows you to switch the Bluetooth device you are using, such as AirPods and various speakers. In contrast, when switching Bluetooth devices in iOS 10, you still need to find "Bluetooth" in the settings and check them one by one.

Drag icons

Drag multiple icons to a folder at the same time, which is also a manifestation of efficiency improvement. If you want to drag several apps into a folder, on iOS 11 You can long press an icon and click on other applications at the same time to drag several of them into the target folder at the same time. This operation is also supported on mobile phones.