Can you talk about Unicom's 4G SMS network age upgrade plan? What does point-to-point SMS mean?

Peer-to-peer means that your mobile phone goes directly to the other party's terminal (including mobile phone, PHS, PDA and so on). ), but only the short messages you send to the whole country are free (no more than 200 messages/month), and the excess is 0. 1 yuan/message. 0. 15 yuan/sent to Unicom and PHS. [put away]