Welcome to join in the 2021 4th International Conference on Information, Networks and Communications (ICINC 2021), which will be held in Barcelona, Spain during October 15-17, 2021. For papers submitted to ICINC 2021, we offer the publications as following: 1. Publication in JCM. Submissions will be reviewed by the conference committees and JCM editorial board, and accepted papers will be published in Journal of Communications, which will be indexed by Scopus, DBLP, CrossRef, EBSCO, Google Scholar; etc. 2. Publication in JAIT. Submissions will be reviewed by the conference committees and JAIT editorial board, and accepted papers will be published in Journal of Advances in Information Technology, which will be indexed by Scopus, EBSCO, Google Scholar, CrossRef, etc. There are two methods for submitting your paper: 1.By our electric system: http://confsys.iconf.org/conference/icinc2021 2.By our contact email box: icinc@iap.org Please feel free contact with us: Conference Secretary: Scenario Jiang E-mail: icinc@iap.org Telephone: +86-28-86512185 For more information about international conferences, please visit our conference website: ICINC 2021 website: http://www.icinc.org