How can the IPHONE go back to the previous step? Is to take a step back

Slide the left side of the screen to the right. Does apple slide back to the previous step mechanism or there is an arrow on the upper left to indicate the previous step!

IPhone unknown function, common skills:

1. When writing a short message, if you want to delete all the contents, just shake the iPhone a few times and a window will pop up. You can delete everything by selecting "Cancel Typing" without pressing the delete key for a long time.

If you want to restore the content you just deleted, shake the iPhone and select "Retype", and the content you just deleted will come back. If it is just pasted, you can "undo pasting" by shaking it.

2. Have you ever encountered such a situation: you want to enter the unit symbol "degree" (small circle), but you can't find it. Now tell you: press and hold 0 on the numeric keypad and this symbol will appear!

3. A short message came, and many people nearby saw your short message intentionally or unintentionally. What should I do? To teach you: Settings-SMS Interface-Turn off the display preview. In this way, when the message comes, there will only be the caller's number or name, and people around you can't see your message.

4. Some friends find that electricity is used very fast. In fact, you have opened something that is unnecessary and consumes power: Settings -WIFI- Off; Settings-Mail-Get New Data-Close; Settings-General-Location Services-Off; Settings-General-Bluetooth-Off; Settings-brightness-automatic brightness balance; In addition, at least one electric cycle is guaranteed every month (electric cycle: refers to the automatic closing of the handle when in use, and then continuous flushing for 6-8 hours).

5. Apple has 270,000 applications and can normally install 2 160 softwares. However, if there are too many softwares, they often need to be upgraded, which leads to the little red dot of the App Store icon, which is very eye-catching and troublesome to upgrade. I believe that most people have some feelings. It can be solved by setting: Settings-General-Access Restrictions-If you don't enable the installation of the application, you won't have this icon when you return to the desktop, and you can also prevent the software from being dumped.

6. Are you still worried about listening to songs when you sleep? Are songs still playing after you fall asleep? In fact, you can choose to turn off the iPod regularly in the clock tool that comes with the iPhone: advance the "clock" that comes with the iPhone, then enter the "timer" and then enter the "when the timer ends", and find the "iPod sleep mode" inside to use it.

7. There is no backspace key on the surface of the calculator, but you can backspace by sliding left or right on the digital screen.

8. Click the plus sign under 8.safari, and you can open one directly from the desktop after saving it to the home screen.

9. Shake iPhone/iPod touch to play music randomly. The microphone on the original earphone, click Pause, double-click Fast Forward, and triple-click Back to rewind the song. Click Yes to the previous song and the next song, and press and hold it to be the same song.

10. Press and hold the button of line control, and you will enter speech recognition. You can call, for example, xxx. Or ask: which band is it? It's the same if you press the home button without wires.