Quick meaning
Standard text messages sent between mobile phones via the phone network.
Think of it like this
Like a short written note delivered by the telephone network.
Where you may see this
You may hear this in email apps, messaging apps, video calls, and workplace instructions.
Why it matters
Knowing the term makes it easier to message people correctly and avoid simple communication mistakes.
Say it simply
SMS (Short Message Service) means: Standard text messages sent between mobile phones via the phone network.