Excuse me, what are traffic SMS and free SMS? How are these made?

This mobile phone software not only has the basic function of sending short messages, but also can log in through various terminals such as PC, mobile phone and WAP. , so as to realize seamless and instant communication between PC and mobile phone, and ensure that users will never go offline. At the same time, it provides many powerful functions, such as free sending of friends' mobile phone short messages, ultra-low cost of voice group chat, and mutual transmission of mobile phones and computer files, so that users can have a more perfect product experience during use; It can meet the needs of anonymous text and voice communication for users, and create a truly unconstrained, unrestricted and safe communication platform for users. At present, the popular traffic SMS software includes Aiyouyou iuu, Haococoa, zazoc and so on. The above is reproduced from Baidu Encyclopedia, but I personally use traffic SMS, which is basically equal to free SMS. SMS, MMS, voice, etc. can be sent through gprs traffic. If you subscribe to the internet package, it is basically free. I have tried all the above software, but I still think iUU is the best after trying it. The software is the best, and it will be received immediately. Zazoc was used before, and the software was not good. Moreover, the message sent out was not received by the other party or it took half a day to receive it. There is no point in using this software. I used Aiyouyou iuu for several months, which is very good. I recommend it to you. By the way, the best thing is that there is also a computer terminal, which can be sent by mobile phone and computer. Haha, after talking so much, give points quickly! ! ! ! ! ! !