Apple and Samsung have successively adopted the esim function. Why don't domestic mobile phones cancel SIM cards?

? ? Apple and Samsung have successively adopted the esim function, but the reason why domestic mobile phones do not cancel the sim card may be mainly due to some obstacles in security, management and technology.

According to media reports, the eSIM card, that is, the embedded SIM card, embeds the traditional SIM card directly into the device chip, instead of being added to the device as an independent detachable component, and the user does not need to insert a physical SIM card. ESIM is a data file that can be downloaded to the mobile terminal through the network. With eSIM, all kinds of electronic products can connect to the internet, make and receive calls, and send and receive short messages. In terms of specific functions, eSIM is no different from ordinary SIM cards, that is, any device that can access the mobile network can use eSIM. In fact, in layman's terms, eSIM is an electronic SIM card. The main difference between esim and sim card is that it has no physical load.

Friends all know that eSIM is not a physical SIM card. It can be directly integrated into the chip to realize the functions provided by the previous SIM card, while the SIM card currently used by small partners realizes the functions of communication security and encryption key through the separation of the machine and the card, which is characterized by strong security and privacy.

? ? Advantages of eSIM compared with SIM card: First of all, compared with physical SIM card, eSIM card is directly embedded in mobile phone chip. The biggest advantage of this technology is that it can save the internal space of mobile phone and effectively improve the endurance of mobile phone. This convenience is not available in the past SIM card; Secondly, eSIM has changed the one-to-one networking restriction of the original SIM card, and can realize free switching between different operators, which is not only convenient, but also saves a lot of roaming fees for small partners; Thirdly, because eSIM is a data file downloaded to the mobile terminal through the network, it is not a physical SIM card, so in practical use, it does not need the technical support and support of related equipment, thus effectively alleviating many puzzles and problems faced by mobile phone manufacturers at present.

? ? Apple and Samsung have successively adopted the esim function, but the main reason why domestic mobile phones do not cancel the sim card may be that there are still related problems and obstacles in security, management and technology. First, there are problems and obstacles in security. At present, compared with the traditional SIM card, there are still some hidden dangers and loopholes in security protection due to the short actual use time of eSIM. For example, during eSIM activation, network setup, etc. , there may be a leak, or some hacker organizations may steal confidential information from it. Due to the operation of SIM card for many years, the relevant regulatory authorities and operators have formed a relatively complete anti-leakage supervision system, both technically and in daily management. Second, there are problems and obstacles in management. At present, domestic SIM card users are operated and managed by four operators: China Mobile, China Unicom and China Tietong. The main application limitations of domestic eSIM usage scenarios are still on wearable devices such as smart watches, but there is no unified and standardized management method for the application of mobile phone eSIM cards; Third, there are technical problems and obstacles. At present, due to the short time of developing esim in China, the technology is not fully mature. If esim is applied to four operators, it will also involve many technical problems such as interconnection between networks and unified control of security level of eSIM chips.

As the saying goes, the solution is always more difficult than the reality. In my opinion, in the short term, it is unlikely that eSIM will be widely used in domestic mobile phones. However, with the active guidance of the country and the organization, development and promotion of eSIM applications by relevant units, it is expected that the landing of eSIM will become inevitable.