The origin of dual-card mobile phones
(1) Concepts related to dual-SIM mobile phones
Since its birth, dual-SIM mobile phones have experienced dual-SIM single standby (two cards are inserted into one mobile phone, and the user can choose one card to stand by) and dual-SIM dual standby (two cards are inserted into one mobile phone, and both cards are standby). At this stage, since there are not many application scenarios for dual-SIM single standby, it will soon be replaced by dual-SIM dual-standby mobile phones. When there is no special description in this article, "dual-SIM mobile phones" refer to "dual-SIM dual-standby" mobile phones.
Dual SIM dual standby means that the mobile phone can install 2 SIM cards. You can specify a card as the default calling card and use it for Internet access through settings. Dual card dual standby has the distinction of "single-pass" and "dual-pass":
Dual-card dual-standby single-pass mobile phone: After inserting two SIM cards A and B into the mobile phone, when the A card is in a call, if someone calls the B card, it will prompt that the phone cannot be connected or is not in the service area. When the A card call ends The system does not display the missed call notification of the B card. In addition, since the dual-card dual-standby mobile phone needs to manually designate a certain SIM card for the networking function (assuming it is A), the networking function of the A card will also be blocked when the B card is on a call. Of course, there is a trick that can solve part of the problem very well, that is to "transfer" the B card to the A card. When the A card is on a call, the person who dials the B card will receive a prompt that the other party is on the call. At the same time, after the phone owner finishes the call, he will also see the missed call reminder of the B card in the mobile phone.
Dual-SIM dual-standby dual-pass mobile phone: During the A-card call, if someone calls the B-card, you will hear a "beep-beep" tone. At this time, you can choose two options: continue to hold the A-card call and end the call Afterwards, the system will display the missed calls of the B card; choose to keep the A card call, answer the B card call until the call ends, and continue to answer the A card call if the caller from the A card does not hang up.
As for how to judge whether your mobile phone supports dual communication, use one card to dial another card, and if you can dial through, it means dual communication is supported.
Implementation principle of dual-pass single-pass: In principle, a dual-SIM dual-standby "single-pass" mobile phone has only one set of radio frequency units (including baseband and antenna) built-in, which needs to constantly switch between the two networks and automatically search for networks. Just because the switching frequency is fast and the time is very short, users have the illusion of dual-card standby at the same time. Here comes the problem. Since one set of radio frequency units can only be responsible for one call at the same time, when the A card calls, the B card signal will be temporarily blocked until the call ends.
In a "dual-pass" mobile phone, two sets of radio frequency units are often required to be responsible for the network of two cards. Since the two sets of radio frequency units are independent of each other, the phone of card A can also be connected normally during a call. Of course, due to the addition of an additional set of radio frequency units, it may cause interference to the WiFi and Bluetooth of the mobile phone, and even cause the fuselage to become thicker. The other two sets of antennas will also increase the power consumption of the mobile phone and shorten the battery life. Due to the high cost of dual-card dual-standby and dual-pass, and the fact that most users cannot use this function, there are very few mobile phones that support dual-card dual-standby dual-pass, even Apple iPhone XR and iPhone XS MAX Neither does this feature.
From the perspective of the development trend of domestic network, 2G (GSM) network withdrawal is the general trend. In the future network environment, it is destined that the secondary card of dual-SIM mobile phones must support 3G/4G network, otherwise the secondary card will not be able to receive signals in the future. Therefore, baseband manufacturers (including Qualcomm, Huawei, and MediaTek) have followed the trend and added support for dual-card 4G data + WCDMA voice calls (and "dual-communication" was canceled due to comprehensive factors such as cost and lack of user usage scenarios). Now the three major operators are promoting the VoLTE high-definition voice network. When using VoLTE to make and receive calls, the voice also goes through the 4G LTE network, so the main card will not be unable to access the Internet when making and receiving calls. Meeting users is a big plus. Of course, in order to enjoy this function, the mobile phone must also support dual-card 4G and dual-card VoLTE, which can be achieved by many high-end Android phones now. Apple's new iPhone will add dual-card VoLTE in the subsequent iOS 12 update.
(2) Review of the historical development of dual-SIM mobile phones
Going back to 2003-2004, China Mobile and China Unicom were the only ones in China's mobile communication market. Among them, China Mobile's GSM business had a monopoly market share. In the early stage, China Unicom participated in the competition with GSM. For various reasons, it also built and operated a CDMA network at the same time. In the market competition, China Unicom has always been in a weak position. CDMA technology and security and confidentiality have advantages, and have been recognized by many business users, but many users are very reluctant to give up the original "139" number. Under this circumstance, China Unicom launched the mid-to-high-end customer brand "World Wind". In order to cooperate with the development of "World Wind", an important figure in the mobile phone industry at that time - Yu Yingtao (currently President and CEO of New H3C Group, Ziguang Co., Ltd. Chairman of the Co., Ltd., then Deputy General Manager of China Unicom Marketing Department and General Manager of Terminal Center, General Manager of Unicom Huasheng, former General Manager of Sales Department and General Manager of Zhejiang Unicom) innovatively defined the "dual card" world-style mobile phone, Furthermore, the "dual-mode dual-standby" function is proposed to solve the problem of two different CDMA/GSM networks being online at the same time, and to meet the needs of users who use one mobile phone to have both a new CDMA number and an old mobile number from China Unicom. Under his promotion, this product definition was soon commercialized. Samsung launched the SCH-W109 mobile phone in 2004, marking the official birth of the dual-SIM single-standby mobile phone.
The dual-SIM dual-standby mobile phone was officially born in 2005. China Unicom and Yulong Coolpad jointly launched the world's first "dual-SIM dual-standby" smartphone - Coolpad 728. The typical representative of the brand, under the background of "Nokia, Motorola, Samsung, Siemens" and other international brands monopolizing the Chinese mobile phone market, opened the era of head-to-head confrontation between national mobile phone brands and international brands.
(Photo: Coolpad 728)
The development of mobile phone
Research the development of dual-SIM mobile phones from multiple dimensions such as brand and OS, standard and chip, technology evolution and user experience, and market sales:
(1) Brand and OS Latitude
In the early days, China Unicom cooperated with Samsung, Motorola and other international brands to secretly develop dual-SIM dual-standby mobile phones, but it was difficult to break through in technology, and it was difficult to solve the problem of radio frequency interference between CDMA and GSM networks. Yulong Coolpad believes that dual-card dual-standby mobile phones are an important strategy for Coolpad to break through the market. After more than a year of hard work in research and development, the technical problem of mutual radio frequency interference between CDMA and GSM networks has finally been solved. With the help of operators, Coolpad has become one of the four giants of the domestic smartphone "China Cool Alliance".
The first dual-SIM dual-standby mobile phone was a national brand, but international brands in the Chinese mobile phone market at that time had obvious market advantages. In order to promote the development of dual-SIM dual-standby mobile phones, Yu Yingtao pushed Samsung to launch the first international brand dual-SIM dual-standby. Phone - Samsung W579. This famous mobile phone opened the prelude to the "luxury annual flagship high-end mobile phone", with more than one million sales. This mobile phone marketing case has been enduring for ten years. As of now, the annual flagship phone strategy of major brands is actually They are all evolved and developed on the basis of the W579 trader case. The success of the dual SIM dual standby mobile phone W579 can be said to be both the "dual SIM dual standby" that made the W579 a classic, and the W579 that made the "dual SIM dual standby" widely accepted by users. Later, motorcycle, LG and other brands participated in China Unicom's "World Wind" project and launched dual-SIM mobile phones one after another.
(Picture: Samsung W579)
Smartphone OS is mainly Android and iOS camps, among which the Android camp mobile phones in the Chinese market have fully popularized "dual SIM" since 2009. Since the iPhone officially entered China in 2009, there have been voices and rumors about the release of dual-SIM iPhones. On September 13, 2018 (Beijing time), Apple released three new iPhone models, two of which are exclusively for the Chinese market. The physical card slot "dual-card mobile phone", so far, marks that "dual-card" will become the standard configuration of mobile phones in the Chinese market, and also marks that "Chinese innovation" has been globally recognized and carried forward. It has been fifteen years since the proposal was made.
(2) Format and chip dimensions
Dual-SIM mobile phones are basically developing along two main lines, one is 2G feature phones, and the other is gradually applied to the field of 3G/4G smart phones.
In the middle and late stages of the 2G era, the 2G feature phone market has become the world of "copycat phones", and dual-SIM has also become the standard configuration of "copycat phones".
In 2009, China entered the era of 3G and the gradual popularization of smart phones. In 2014, China entered the era of 4G and the era of comprehensive popularization of smart phones. Since the mainstream chip manufacturers Qualcomm and MediaTek have taken the support of "dual card dual standby" as the basic configuration of the chip, the chip manufacturer has become one of the most important driving forces for the popularization of "dual card". R&D and manufacturing become "standardized and simplified". MediaTek is the first chip maker to introduce dual-SIM dual-standby to large-scale commercial use. The first dual-SIM chip was the MT6225 launched in 2008. Qualcomm launched its first dual-SIM chip, the QSC6165, in 2009.
(3) Technology evolution and user experience dimension
For more than a decade, the dual-SIM dual-standby technology has continued to evolve.
The first evolution is: the original physical card slot position directly limited the main and auxiliary cards, and evolved to "blind insertion", that is, the physical card slot does not limit the position of the main and auxiliary cards. Users can set the main and auxiliary cards through software settings, which is more convenient and more convenient for users. free.
The second evolution is: it originally supported GSM/CDMA dual-mode, but evolved to support multi-mode, and then support all Netcom (all standards and frequency bands), and the network applicability is getting stronger and stronger.
The third evolution is that the card size has evolved from 2FF cards to support 3FF cards, 4FF cards (Nano SIM), and eSIM cards (without physical cards), and dual cards take up less and less space on mobile phones.
The fourth evolution is: the original secondary card only supports 2G, but the secondary card supports 3G (WCDMA), and then supports LTE, dual-card VOLTE, and the user's choice space is increasing.
(Picture: Evolution of Physical SIM Cards)
(Picture: iPhone new dual card slot style)
(IV) Dimension of market sales
Chinese consumers are very sensitive to the selling point of "quantification". Regardless of whether they are used or not, 4G is better than 3G, and if they have dual cards, they will not pay for a single card. From the perspective of sales, "dual card" has become a typical "explicit selling point" (from the perspective of mobile phone trading, "explicit selling point" refers to the selling point that users can directly feel when purchasing, also known as selling point, such as Screen size, dual cameras, dual cards, etc. Relative to the selling points that users need to perceive during use, we call them "hidden selling points", also called use selling points, such as camera resolution, screen resolution, software functions, etc.) .
According to the statistics of "BCI Communication Research", dual-SIM mobile phones are more and more recognized and welcomed by the market, and the market share has increased from 80% in early 2016 to 90% now. At the same time, the actual usage rate of dual-card users is getting higher and higher, and the usage rate has increased by 10PP. The increase in the actual usage rate shows the increase in dual-card scenarios. One of the important reasons is that thanks to the continuous decline in the price of carrier traffic in recent years, more and more users keep an old number and set it as a secondary card to ensure that they can get through. Just buy another card with more favorable traffic to access the Internet. In the future, the advantages of this combination will become more and more obvious.
(Picture: BCI Communications Research Chart)
Taking history as a mirror, we can know the rise and fall. The 5G curtain is gradually opened. What new developments will there be in dual-SIM phones that have gone through the vicissitudes of life? What new inspirations can technological innovation bring us?
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The future of dual-SIM phones
The "dual SIM" function of a dual-SIM mobile phone has two essences. The first essence is the combination of the SIM card and the mobile phone, and the second essence is that one terminal carries two or even multiple numbers. From these two natures, the development of SIM card technology and the evolution of the network will bring more changes to dual-card mobile phones. Let's discuss the future of dual-card mobile phones from the aspects of eSIM and 5G.
(1) eSIM is the main form of future SIM card for dual-card mobile phones
eSIM card, namely Embedded-SIM, embedded SIM card. The concept of an eSIM card is to embed a traditional SIM card directly on the device chip, rather than being added to the device as a separate removable component, and users do not need to insert a physical SIM card. The characteristics of eSIM have the following obvious advantages: First, mobile phones or other smart terminals can be made lighter, thinner and more waterproof. Even for the smallest 4FF card now, the physical card slot takes up a certain amount of space on the phone, and there must be gaps to cause problems for the waterproof design, while eSIM does not need a card slot and does not take up physical space alone. This advantage is more obvious when applied to wearable smart terminals such as watches. Second, it is more in line with the user experience. After the user buys a mobile phone, whether it is to buy a new number or move the old number to the new mobile phone, the eSIM technology supports the user only need to set the number independently through the online APP, and does not need to run errands to the physical store. , which is more in line with the user's mobile Internet experience.
Based on the characteristics and advantages of eSIM, dual-card mobile phones will evolve into "one physical card slot + one eSIM card" to carry two cards, and will eventually evolve to all eSIM cards to carry two numbers, and theoretically can carry N A number to achieve "dual-card dual-standby" or even "multi-card dual-standby" (multiple numbers can be configured on one mobile phone, but based on energy consumption and technical reasons, it is generally only "dual-standby". more technical improvements). Among the new iPhone products in 2018, the foreign version of a product (the model is iPhone XS) supports dual cards (only a single card is supported in China), which is achieved through one physical card slot and one eSIM.
When it comes to eSIM, two issues need to be explained. The first issue is security, and the second issue is policy supervision. Security issues mainly refer to technical security and network security issues. From the perspective of technical security, the security level of eSIM is higher than that of current SIM technology. The rumored "can code the machine" and "can choose the operator to change the number at will" is a one-sided interpretation. The core of eSIM security is key and network encryption. As long as the key and network are in the hands of the operator, and the number and number resources are all allocated to the operator, there is no number and no key, how can users change numbers at will? Changing numbers is easy and fast and changing numbers at will are two different things. In terms of policy supervision, eSIM technology and security standards have been finalized and perfected. However, due to the short commercial use of eSIM, countries have different policy supervision on eSIM. At present, China has not yet allowed eSIM to be applied to mobile phones, which is also supported by the iPhone XS abroad. One of the main reasons why dual SIM is not supported in China. Of course, from the perspective of technological development trends, eSIM technology will be one of the inevitable directions for the future development of SIM cards. China is speeding up its progress. At present, eSIM watches from brands such as Apple and Huawei have launched the "one-number dual-terminal" trial commercial use in 7 cities. It is expected that after the trial commercial use, it will be commercially available nationwide. China is also actively researching the application of eSIM in smart terminals such as data terminals and mobile phones. As the industrial chain gradually matures and supervision methods are gradually enriched, eSIM dual-card mobile phones will also appear in China in the near future. The iPhone with dual physical card slots exclusively for China is also expected to become a transitional product and will be a globally unified version.
(2) 5G requires more dual-card function
On the surface, 5G and dual-SIM do not seem to have a "strong correlation", but if you look deeper, you will find that dual-SIM has broader application scenarios in the 5G era, mainly including:
1. The application of dual cards in three major 5G scenarios: 5G defines three major application scenarios for users and scenarios. The first is eMBB, which is literally translated as "enhanced mobile broadband"; the second is uRLLC, which is literally translated as "highly reliable and low-latency connection". ; Finally, mMTC, literally translated as "mass Internet of things", 5G's powerful connection capabilities can quickly promote the deep integration of various vertical industries (smart cities, smart homes, environmental monitoring, etc.). Each of the three scenarios has more subdivided usage scenarios. The usage scenarios are not only segmented, but also intersected and integrated. That is to say, in the future, one user and one smart terminal may be in multiple 5G usage scenarios at the same time. , switch between multiple scenes. Dual-SIM or multi-SIM mobile phones can be defined in different scenarios through different cards, realizing the evolution from "network dual standby" to "scene dual standby".
(Picture: 5G three major scenarios and sub-scenarios)
2. The application of dual cards under the 5G "network slicing" technology: To realize the transition from "everyone connection" to "interconnection of all things", the number of connections will increase exponentially, and the network will inevitably become wider and more complex. The implementation of offload management requires the use of "network slicing" technology. Network slicing essentially divides the operator's physical network into multiple virtual networks. Each virtual network is divided according to different service requirements, such as bandwidth, delay, security, and reliability, and flexibly responds to different network applications. Scenes. In the 5G era, the object of mobile network services is no longer a simple smartphone, but various types of devices, such as the Internet of Vehicles, Internet of Things terminals, and so on. Facing the 5G era, operators need to have the ability to quickly launch services and deploy flexibly. The 5G network not only needs to meet the requirements of a large number of parallel services online to ensure end-to-end performance, but also avoid the investment risks of emerging services in the market cultivation stage. If a private network is constructed according to the traditional way of thinking, it will inevitably lead to waste of resources, but it can be achieved through network slicing. To meet the needs of a logical private network, once a private network service does not have investment value, operators can withdraw in time and dynamically delete slices, effectively reducing investment risks. Customers can also enjoy more favorable tariffs to reduce user costs. Based on this, the function of dual-card dual-standby will be extended from smartphones to other smart terminals in the future. Dual-card means that it can carry multiple operator billing numbers, and use different billing numbers for different "network slices". Form the optimal "cost mix".
(Picture: Background map of 5G network slicing technology)
3. The application of dual SIM cards under the trend of 5G full Netcom: "Full Netcom" has been well received by users and retail channels, and the future 5G business for 2C side will continue to "full Netcom". At present, mainstream chip manufacturers have stated that 5G chips will fully support dual-card full Netcom.
Qualcomm believes that dual-card products will improve the user experience, enhance the product competitiveness of mobile phone manufacturers, and enhance the competitiveness of operators. This will be the trend of mobile phone development. The 5G commercial chip (SDX55) launched next year fully supports dual-card.
MediaTek believes that the scale of all Netcom is obvious, consumers' habit of dual-card has also formed, and even channel sales have also formed a dependence on full-netcom dual-card. In the future, MediaTek's 5G solution will adhere to the direction of dual cards. With the support of mainstream chip manufacturers, dual-SIM will continue to be popular in the 5G era.
Inspiration from dual-SIM mobile phone innovation
(1) The cultivation and protection of national core technologies and innovations are very important
At present, more than 70% of the world's mobile phones are produced in China, and the Chinese mobile phone market accounts for more than a quarter of the global market. However, the Chinese mobile phone industry has always been in an embarrassing situation of "lack of cores, screens and souls", that is, without mastering "chips, screens and OS" "These core devices and core technologies. "Dual SIM" is the most valuable contribution of China's innovation to the global mobile phone industry. This innovation has gone through the test of history and the market and has become a classic inheritance. Although "dual card" cannot be regarded as a complex high-tech, it has undergone continuous iterative development for more than ten years before it is recognized by the global industry chain and market today. Then we must have a clear understanding that if China wants to occupy a place in the core devices and technologies of mobile phones, it will take longer and more resources to invest. I am glad to see that with the call and support of the state, China's mobile phone industry chain is investing and cultivating in screen, memory, chips and other aspects. The market position matches.
The healthy and sustainable development of "dual card" is inseparable from the support of the state and operators and the investment of manufacturers. China Unicom and Yulong Coolpad jointly applied for "dual card" technology and won the "Second Prize of National Science Progress" in 2007. .
In fact, many people will think, since Chinese manufacturers are charged so many patent fees by foreign chip manufacturers, has "Dual Card" applied for patents? After understanding, during 2005-2006, Yulong Coolpad submitted an application for an invention patent and a utility model patent for "a dual-mode mobile terminal", which were approved. Since then, with the evolution of technology, it has more than 200 patents related to "dual card dual standby". It can be said that China has the core technology and core patents of "dual card dual standby".
Why do some companies in the mobile phone industry charge a lot of royalties? And since the birth of the "dual card dual standby" mobile phone, no one can make a fuss about the patent fee issue? It is conceivable that for dual-SIM mobile phones with a sales scale of not less than billions, even a dollar per unit is a considerable income.
When it comes to this issue, it is necessary to mention another important person who has made important contributions to "dual card dual standby" - the former founder and chairman of Yulong Coolpad, Guo Deying, who founded Yulong Coolpad and integrated technology research and development and independent Innovation, as the core differentiated competitiveness, attaches great importance to patent protection. At the beginning of the launch of "dual-card dual-standby" mobile phones, in order to promote the development of CDMA and "dual-card dual-standby" and mobilize the enthusiasm of domestic and foreign enterprises to participate, China Unicom advocated the establishment of the "CDMA Industry Alliance", and more than 20 domestic and foreign brands have joined Yulong Coolpad responded positively and shared the "dual SIM dual standby" patent with China Unicom for free to all manufacturers who joined the "CDMA Industry Alliance" at that time. If it was just a matter of earning some royalties for quick success at that time, the current situation of "dual-card dual-standby" might not have flourished. One of the contributions of "to be carried forward" reflects the mind and pattern of Chinese operators and national enterprises to promote industrial development.
In my country, patents are divided into three types: invention, utility model and appearance design. After understanding, there are nearly a thousand patents related to "dual card dual standby". Whether a patent can be charged is not a simple matter, but an enterprise knowledge The overall strength of property rights is determined by a series of complex factors such as the restriction of the mutual use of patents. In short, in the mobile phone industry, there are very few cases in the mobile phone industry that can be charged through one or several patents. Unlike some simple products in other industries, simple products may be conquered all over the world with a single patent. A mobile phone is a high-tech product with complex technology and frequent iterative evolution. A mobile phone is composed of many components and technologies. Therefore, there are almost countless patents involved in a mobile phone. Therefore, can a company charge other companies for patent authorization? The fee is to see whether the "absolute advantage" of the core mobile phone technology patents owned by the company is obvious, and it is impossible to win by relying on a certain technical advantage. These are another reason why the "dual card dual standby" patent does not charge.
There are many historical disputes about the "dual card dual standby" patent, so I won't analyze it too much here. The inspiration to us is that for Chinese innovation, the state needs to increase protection and support, and for enterprises, it is necessary to strengthen patent awareness and do a good job in patent protection. Every innovation and every patent may not be recognized by everyone at the beginning, and it may be very rare in the end, but every innovation and patent should be respected and protected, so as to improve the overall strength of enterprises and national intellectual property rights, Only in this way can "Chinese innovation" go further.
(Picture: Certificate of National Science and Technology Progress Award)
(2) Linking the whole industry chain to promote the large-scale development of innovation in China
The reason why "dual card" can be recognized by the Chinese market, the global market, and the terminal industry chain is that the new technology and new functions can achieve large-scale development thanks to the promotion of the entire industry chain. Looking back, "dual SIM" comes from the needs of users' free choice; operators define dual-SIM products and promote them to acquire users; mobile phone manufacturers invest in R&D and production to obtain product differentiation and gain competitive advantages; chip manufacturers integrate mobile phone chips from the perspective of The "dual SIM" function is fully supported, which greatly accelerates the large-scale popularization of dual-SIM products; the sales of dual-SIM mobile phones by channel dealers can increase the number of users and generate more profits.
It should be said that "users, operators, mobile phone manufacturers, chip vendors and channel vendors" in the whole industry chain have played a role and have gained something. Coupled with the sharing of "dual card dual standby" technology, the final "dual card dual standby" technology will be shared. "The popularization of mobile phones will naturally come naturally. This is a successful case of the "most market-oriented" open cooperation in the entire industry chain.
After more than ten years of development of smart phones, product homogeneity is serious, and product iterative innovation capabilities have declined significantly. The mobile phone industry is trying to innovate products to form product differentiation. Through the case of "dual SIM" mobile phones, it can be seen that it is still necessary to use User needs and experience are the starting point, and the entire industry chain is linked, rather than some "pseudo-innovation" that "makes gimmicks" and "eyeballs" for the marketing level. In the end, it is "hard to say alone", and it is impossible to form inheritance and iterative upgrades.
(3) Good innovation and good technology should be based on "commercialization"
The "commercialization" referred to here refers to the implementation of good innovations, good technologies, and good solutions in the ICT industry into business models, which must be embodied in products or services that are acceptable to most users and satisfy the needs of users. Demand and profit at the same time.
Since the emergence of "dual-SIM" mobile phones, it has been accompanied by the rapid development of China's mobile phone industry. In the early 3G period, the dual-SIM function of "thousand-yuan smart phones" promoted by operators was standard. The card function is also the function most loved by the younger generation of the Internet. Recently, after Apple released the new dual-SIM iPhone, Apple CEO Tim Cook said to the media: "We realized the importance of dual-SIM and dual-standby from the Chinese market, so we introduced it and thought about how to provide it to Everyone. The reason Chinese users like dual-card dual standby actually applies to many other countries, but these consumers don’t realize it.†On September 21, the single-card iPhone XS and dual-card iPhone XS Max were launched simultaneously, Although dual-SIM phones are much more expensive than single-SIM phones, they are still popular among users, and the sales of dual-SIM versions are almost ten times that of single-SIM versions. To judge whether the "commercialization" is qualified, the market and users are the final judges.
"Dual-SIM" mobile phones are basically popular in China, but there are still great differences in the penetration rate in various countries around the world. The main reason is whether the necessity of users choosing to use dual-SIM scenarios is prominent. In China, mobile phone numbers are divided into three major operators, and number portability has not been fully opened. The market positions of the three major operators are asymmetric, and the tariffs and prices vary greatly; within one operator, the numbers are divided by more than 300 cities. Yes, they all have geographical attributes, and there were differences in long-distance charges and roaming charges before; for users, the original mobile phone number is not only a call number, but also associated with bank cards and various social welfare accounts. Technical Validation Tool. Therefore, in China, whether it is based on the needs of users to enjoy more preferential tariffs, or the need to distinguish between "work" and "private" scenarios, the demand is constantly increasing. In many countries around the world, the above situation may not exist, so the demand for the "dual card" function is less "rigid" than the domestic market, but from the perspective of development trends, multi-channel, multi-channel and multi-choice is the trend of technological development . China's development in many areas of the mobile Internet is already leading the world's development, and Apple CEO Tim Cook said to the media: "We have a very large user base in China, and there are nearly 2 million developers in China, so we are so close. The Chinese market to understand what the real difference is, and we're more than happy to make changes to improve features that we haven't thought of yet. Another example we've seen is QR codes, which are much more important in China than others Anywhere, so we provide a function that is easier to use QR code. In fact, in many cases, we will bring these functions to the world, including the dual card dual standby, QR code that you see now, an important reason That is, the pace of China's growth is too fast, and the acceptance of Chinese consumers is very high. China has not experienced the stage of the so-called desktop Internet, but has directly embraced the mobile Internet, so Chinese consumers do not have a desktop in their minds. The burdens of the Internet age explain to a certain extent why China's mobile payment share is so high, while other countries' mobile payment process is much slower. In fact, they just don't try more. So, I think this world There is a lot to learn from China, and Apple, as a part of the world, has reason to pay attention to the needs of consumers.†The world-renowned large companies recognize “China Innovation†and adopt it as the basic function of their products, which greatly contributes to “China Innovationâ€. "Promotion and popularization around the world. These enterprises and products will also enjoy the dividends of "following the needs of users and prospering".
Finally, I would like to pay tribute to the industry leaders and domestic and foreign companies who have contributed to China's innovative "dual card". In the process of writing this article, these leaders and companies have given strong support and help, and I would like to thank them here!
I wish more and more "Chinese innovations" that meet the needs of users, and more "Chinese innovations" to contribute to the world.
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