When my mobile phone sends a text message, it displays "There is not enough storage space to receive information, please delete some data first". What happened?

Mobile phone information can be stored on SIM card or mobile phone memory card. SIM card capacity is relatively small, and it is easy to be full. When this prompt appears, you can delete some useless information before. If there is a memory card, in the information setting, this problem will not often occur when the setting information is received in the memory card. But no matter where it is stored, there is a lot of information, and the partition time needs to be cleaned up.