Where is the setting of desktop icon "floating" by gravity sensing when iPhone iOS8.2 is turned off?

1. First, in the desktop of Apple's mobile phone, click the desktop SMS icon to open the SMS.

2. As you can see, there are many short messages in the queue, as shown in the figure below.

3. Turn the phone to the side. At this time, all the short messages have become horizontal bars.

4. If you don't want the automatic gravity sensing of the mobile phone, you can slide your finger from the bottom of the mobile phone to the top, bring up the shortcut key of the control center, and click the lock sign.

5. It can be seen that after clicking, the lock mark has turned red and locked, so that gravity sensing is turned off.