SMS on text messages stands for Short Message Service. It is a text messaging service that enables the exchange of short text-only messages between mobile devices, typically limited to 160 characters per message

. SMS messages are sent over cellular networks using signaling channels and do not require internet connectivity, making them widely supported and reliable even in areas with limited network coverage

. SMS is the most common form of text messaging and is used for personal communication as well as business purposes such as marketing, two-factor authentication, and mobile banking

. In contrast to MMS (Multimedia Messaging Service), which allows sending pictures, videos, and other media, SMS messages contain only text without multimedia attachments

. In summary:

• SMS = Short Message Service
• Text-only messages up to 160 characters
• Sent via cellular networks, no internet needed
• Widely used for personal and business communication