Does your all-network mobile phone really support all networks?
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With the development of technology and the improvement of people's living standards, it is not a new thing for a person to have two cards. Some people apply for two cards because they often need to live and work in two cities, some because the company issues a card when they go to work, and some because they need different cards for different customers for business. Then the problem comes. Nowadays, dual-open dual-standby mobile phones have been popularized. When the operators of the two cards in your hand are China Mobile or China Unicom, it is okay, but if one card or even two cards are China Telecom, then it will be a big trouble. Either it can only be used as the main card, or it can't be used at all. This situation has been going on for many years, which has also caused many telecom users pain. For the same mobile phone, the telecom version is more expensive than other mobile phone versions, and even if you buy a dual-card mobile phone, it is still extremely inconvenient to use. You can only use the telecom as the main card, and the other card can't use traffic except for making calls. Once you switch to a non-telecom card as the main card, the telecom card will go on strike directly. So why does this happen? In fact, the reason is very simple. The 4G networks of China Mobile and China Unicom are evolved from the 2G/3G networks, while the 4G network of China Telecom is independent of the 2G network. Therefore, China Mobile and China Unicom only have one chip in their phones to handle all networks, while China Telecom phones can only place two chips inside, responsible for the 2G and 4G networks respectively, so China Telecom phones are incompatible with China Mobile and China Unicom phones. In the early era of full network access, the card slot of China Telecom cards was not only fixed, but also affected other card slots when in use, which was very disappointing. However, this year, this era of full network access has passed. At present, many mobile phones have adopted a true full network access design, which not only supports dual-card dual standby blind plug-in technology, but also can choose any card network to go online, and it has no effect on the other card at all. Only such full network access that supports dual-card blind plug-in can be called true full network access technology. Take the mobile phones launched by Meizu in the first half of this year as an example. Currently, all new Meizu products have been upgraded to true full network access technology. Even the cheapest Meizu Blue 3 supports dual-card blind insertion technology, and no longer distinguishes between the primary and secondary card slots. It can use the 4G network of one card at a time, and also supports VoLTE high-definition voice call technology. This is even more true for the more expensive Meizu Blue Note 3, Meizu PRO 6 and other models. Therefore, when choosing a dual-card mobile phone in the future, we must make it clear whether the so-called full network access is a fake full network access or a real full network access, especially for telecom users. As a winner of Toutiao's Qingyun Plan and Baijiahao's Bai+ Plan, the 2019 Baidu Digital Author of the Year, the Baijiahao's Most Popular Author in the Technology Field, the 2019 Sogou Technology and Culture Author, and the 2021 Baijiahao Quarterly Influential Creator, he has won many awards, including the 2013 Sohu Best Industry Media Person, the 2015 China New Media Entrepreneurship Competition Beijing Third Place, the 2015 Guangmang Experience Award, the 2015 China New Media Entrepreneurship Competition Finals Third Place, and the 2018 Baidu Dynamic Annual Powerful Celebrity. |
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