Chinanews client May 7th, the Ministry of Industry and Information Technology issued a notice on further promoting the comprehensive development of the mobile Internet of Things, while ensuring the network service level of the existing Internet of Things terminals, and guiding new Internet of Things terminals to no longer use 2G / 3G Network, promote the migration of existing 2G / 3G IoT services to NB-IoT / 4G (Cat1) / 5G networks.