There are many kinds of logos. Which one are you referring to? Let me tell you a few briefly.

1. There are two vertical lines inside the small square: the meaning of memory card.

2. Small envelope: There are unread messages

3. A small turning arrow: There are missed calls

4. Below a small upward arrow There is a horizontal bar: there are unsent messages, go to the outgoing mailbox to check.

5. If the signal icon on the left changes to E with an equal sign below it, it means that the phone is connected to the network.

6. Some common software icons: little penguin - QQ; small blue lightning - XinAnYi; small smiling face - Fetion.

There are just a few common ones, and then there are some software-specific icons. Is it clear this time? If you think it's good, give it to me!