Why are SMS not sent from WhatsApp - briefly?
SMS messages cannot be sent directly from WhatsApp because WhatsApp is a messaging platform that relies solely on internet connectivity for sending and receiving messages. This design choice ensures that users do not incur additional costs associated with traditional SMS services.
Why are SMS not sent from WhatsApp - in detail?
The primary reason why SMS messages are not sent directly through WhatsApp is due to the fundamental differences in how these two communication systems operate and are designed.
WhatsApp, developed by Meta (formerly Facebook), is a messaging application that operates over the internet using data or Wi-Fi connections. It allows users to send text messages, make voice and video calls, and share multimedia content such as images, videos, and documents. WhatsApp uses end-to-end encryption to ensure the security and privacy of communications between users.
On the other hand, SMS (Short Message Service) is a traditional text messaging service that operates through mobile networks using cellular signals. Unlike WhatsApp, which relies on internet connectivity, SMS does not require an active data or Wi-Fi connection to function. Instead, it uses the Short Message Service Center (SMSC) of the mobile network operator to deliver messages.
One of the key differences between WhatsApp and SMS is the underlying technology they use for message delivery. WhatsApp employs the Internet Protocol Suite (TCP/IP), which includes protocols like TCP, UDP, and IP, to transmit data packets over the internet. In contrast, SMS utilizes the Signaling System No. 7 (SS7) network of mobile operators for message transmission.
Another significant factor is the cost associated with sending SMS messages. Mobile network operators typically charge users for each SMS sent, as it incurs costs on their end due to the usage of cellular networks and SMSC infrastructure. WhatsApp, being an internet-based application, does not incur these additional charges for its users when communicating over data or Wi-Fi connections.
Furthermore, WhatsApp is designed with a focus on providing a rich multimedia messaging experience, including the ability to send and receive high-resolution images, videos, and other types of files. SMS, however, has limitations in terms of message length (160 characters per message) and does not support multimedia attachments.
In summary, WhatsApp does not send SMS messages directly due to the distinct operating principles and technological foundations of these two communication systems. While WhatsApp leverages internet connectivity for data transmission, SMS relies on cellular networks for message delivery. Additionally, the cost structure and functional capabilities differ significantly between the two services.