What's the matter with the goodbye of SIM card? What's the advantage of China Unicom's opening ESIM? Recently, China Unicom announced that it will open ESIM nationwide. So what exactly is ESIM? Let's find out.
ESIM card simply means that the traditional SIM card is directly embedded into the device chip, rather than being added into the device as an independent removable component. This means that Internet access and telephone voice will no longer be exclusive to mobile phones, and more wearable intelligent devices will realize functional independence. The popularity of ESIM will gradually replace the existence of mobile phone SIM card, users can switch freely without changing numbers, and the convenience of operators will be around the corner.
Previously, China Mobile also said that from January 23, 2019 to December 2019, it will be the trial stage of "No.1 dual terminal" service. During this period, users can add an ESIM account with the same number on the basis of the original account and package based on the main number.
What is ESIM?
ESIM is simply an electronic SIM card, which is a data file that can be downloaded to the mobile terminal through the network. With it, all kinds of electronic products can connect to the Internet, receive and dial calls, send text messages, etc.
What are the benefits of ESIM?
Firstly, it can solve the problem that SIM card slot takes up a lot of mobile phone space. Although the SIM card is very small now, in the trend of mobile phones becoming thinner and thinner, the card slot will still restrict the appearance design and battery capacity of mobile phones or wearable devices.
What's the status of ESIM application?
At present, ESIM technology has been applied to wearable devices, such as smart watches, smart partners and so on. In the next step, ESIM technology will be widely used in the Internet of vehicles, industrial Internet of things and other electronic products.
On the policy level, ESIM is also supported. In June 2017, the notice of the general office of the Ministry of industry and information technology on comprehensively promoting the construction and development of mobile Internet of things (NB IOT) pointed out that the research on the application scheme of ESIM / soft sim in NB IOT network should be accelerated.