What does it mean to send text messages with a small lock inside Samsung mobile phone?

The main purpose of mobile phone information locking function is to prevent you from deleting short messages by mistake, and of course it can also play a role in browsing important information quickly. When you lock information, you can click "Lock Information" in the menu key through the information main interface to view the locked information. The path to set the locking information is as follows:

1. First enter the information main interface, select the information to be locked, click the information to enter the information dialogue interface, and then click the information dialog box to enter the information reading interface.

2. Click the menu key-select "Lock" to lock the current information.

3. After setting the information lock, when you need to delete this message, you will be prompted "This session will be deleted". You need to check "Include Protection Information" to delete the message.