SMS (Short Message Service) is a text messaging service that allows mobile devices to exchange short text messages. In a P2P (peer-to-peer) SMS scenario, two mobile devices exchange text messages directly, without the involvement of a third-party service or platform.


Here is how the SMS P2P scenario typically works:


  1. User A creates a new text message on their mobile device and addresses it to User B's phone number.
  2. User A's mobile device sends the text message to their mobile network operator (MNO) for delivery to User B's mobile device.
  3. The MNO routes the message to the appropriate mobile tower, which relays the message to User B's mobile device.
  4. User B's mobile device receives the message and displays it to the user.
  5. If User B wants to reply to the message, they can create a new text message and address it to User A's phone number. The process then repeats in reverse order, with User B's mobile device sending the message to their MNO, which routes it to User A's mobile device.
  6. The two users continue to exchange text messages in this manner until one or both of them decide to end the conversation.


In a P2P SMS scenario, the messages are typically stored locally on mobile devices and not on any third-party servers. This can make SMS a more secure and private communication method compared to other messaging platforms that store messages on servers. However, SMS messages are not encrypted by default, which can make them vulnerable to interception and snooping by third parties.