What is a short message letter?

SMS refers to short messages received through mobile phones or other communication devices.

Short message is a kind of text information, usually composed of characters, numbers and symbols, which can be sent and received through mobile communication network. Short messages can contain various contents, such as personal information, notifications, verification codes, advertisements, etc. SMS is widely used in daily life and business activities. It provides a fast, convenient and real-time communication mode, which is suitable for various scenarios and uses.