Excuse me, what does it mean that my telecom card and point-to-point SMS in the package are free? What is peer to peer?

Peer-to-peer SMS refers to the business form of sending and receiving SMS between mobile phones. The forms of peer-to-peer short messages include intra-network short messages, inter-network short messages and international short messages. Point-to-point SMS is an independent user communication tool in theory. The communication tool can be a mobile phone, client software, PDA, etc. But no matter what point it is, the most basic purpose of point-to-point SMS is to realize two or more points of mutual communication, which is what people usually call chatting.