Q1: What is 5G?
A: 5G, also known as "the fifth generation communication standard", "fifth generation mobile communication technology", "5G NR", is the latest generation of communication technologies and standards for mobile devices such as smartphones, and the current mainstream "4G (LTE) "Extension of mobile communication technology.
Q2: What can 5G be used for? What are the benefits?
A: Compared with the current mainstream 4G network, 5G has many advanced technologies and new features. The three main benefits are "lower latency", "higher bandwidth / faster speed", "larger capacity / can connect more devices.” Each feature can be introduced separately:
Lower latency: The "phased array antenna" used by 5G base stations has multiple antennas, which makes signal coding more convenient and faster. At the same time, the coding and networking methods are optimized for delay modification, which makes the delay lower.
Higher bandwidth / faster speed: 5G network connection has greater bandwidth and higher speed, and can experience a more convenient and high-speed network and data transmission experience.
Larger capacity / more connectable devices: 5G The base station allows a single base station to access a large number of devices and increase the capacity of the base station. This makes the interconnection of everything possible and will greatly accelerate the development of the Internet of Things and intelligent life.
Q3: What is the difference between 5G and previous 4G, 3G, 2G, etc.? What can 5G do?
A: In the earliest 1G era (big brother era), mobile phones can only be used to make calls.
In the 2G era (feature phone era), mobile phones can send text messages to the Internet, but the Internet speed is very slow, simply look at the text page, play word games; and due to the huge differences in communication standards between countries, it is difficult to universalize mobile devices made in different countries, and international roaming is very difficult.
In the 3G era, due to the gradual unification and universality of communication standards, international roaming has become easier to implement, the speed has been significantly improved. It is already possible to barely realize video calls, watch videos online, and view multi-picture web pages. At the same time, it has also promoted the development of the mobile Internet and the era of smart phones.
In the 4G era, the addition of VoLTE allows call quality and speed to be significantly improved, while the bandwidth and speed have further developed, it has become possible to watch high-definition video online anytime, anywhere. Fast network transmission allows digital lifestyles such as mobile payments, short video socializing, and online takeaways to enter the lives of ordinary people.
While the 5G era has just begun, smart homes, everything connected, real-time image delivery, transportation network systems, watching ultra-high-definition videos online and more, a more digital lifestyle will become possible.
Simply speaking: What
can low latency do? In the future, the development direction of the Internet of Everything, Smart Home, and Internet of Vehicles will significantly improve the latency of games and video chat. Don’t wait to download, watch HD online, there may be more usages in the future, so stay tuned;
What can it do with a connected device? Recall, is the mobile phone special card as soon as I arrive at the subway station or train station? 5G massive equipment connections are not crowded, and then they will not be stuck.
Q4: WiFi also has 5G. Is this 5G?
A: No, the WiFi network has two frequency bands of 2.4GHz and 5GHz. 5G of WiFi refers to the WiFi network operating in the 5GHz band; and 5G of the mobile data network refers to "the fifth generation mobile communication technology", which is the latest generation. Communication technologies and standards for mobile devices such as smartphones have many features such as lower latency, faster network speeds, and more connectable devices.
Q5: Does 5G require mobile phone cards? Need to find an operator for a package?
A: There is no requirement for mobile phone card in 5G. Insert the mobile phone card used on 4G mobile phone directly into the 5G mobile phone, and connect to 5G network where there is 5G signal coverage.
Taking the policies of Chinese operators as an example, if the mobile phone card uses a 4G package, 5G basic services can be used on 5G mobile phones. At this time, the maximum downlink rate can reach 300Mbps without additional costs, and do not need to contact the operator to open it;
switch to 5G Enjoy higher network speed and greater network bandwidth after the package. For specific related packages, traffic, tariff descriptions and requirements, it is recommended that the local operator prevail.
Q6: Can 5G call? Does it support dual card dual standby?
A: The current 5G network will be similar to the initial 4G network model for a long time. Mobile phones only use the 5G network to carry data transmission, and they need to switch to 4G / 3G when receiving calls, sending and receiving text messages, and using certain carrier services. It is used under the / 2G network; the current 5G network is only used for data transmission, so when the dual card is used, only the "network card" can connect to the 5G network within the 5G signal range, and the non-network card cannot connect to the 5G network. When a 5G-capable mobile phone is used with dual cards, the data network card can be connected to a maximum of 5G network, and the non-network card (secondary card) can be connected to a maximum of 4G network.
Q7: This is 2020, is it worth buying a 5G phone?
A: Xiaomi participates in the formulation of 5G standards and is one of the first companies in the world to mass-produce 5G mobile phones. Its technical strength and product quality are trustworthy. If the budget is sufficient, it is recommended to purchase 5G mobile phones first and feel the benefits of 5G The new experience is always one step ahead; of course, 5G networks are still under development. In some cases, there are also incomplete operator coverage, network instability, and temperature rise during continuous high-speed downloads. We will continue to optimize with the operators. Improve and continue to bring a better experience.
If visiting Mi MIX3 5G users have expressed fear, resistance and other emotions about the stability of 5G or just a sentence:
If concerned about the stability and coverage of the 5G network, use it after manually turning off the 5G switch. Even without using the 5G function, Mi MIX3 5G is still one of the most worth flagship phones to buy this year, which can provide one with extreme performance, excellent charging speed and excellent comprehensive experience.
Q8: In 2020. Can 4G phones still be bought? (Mainstream users worrying about stability / heat / power consumption, and think that the price is too high and the budget is tight)
A: The 5G network has just begun to develop, and there are still various unstable phenomena. 5G mobile phones are more expensive than 4G mobile phones. It can be more expensive to buy 4G mobile phones at the same price, and it is cheaper to buy 4G mobile phones under the same configuration. If no demand for 5G for the time being, it is suggested to choose to buy the mainstream 4G flagship first, then rest assured that the 5G network is perfected and then switched to a 5G mobile phone to enjoy the new experience brought by 5G.
Network speed, signal and traffic
Q9: How fast is 5G? Does it support to reach this speed when actually use it?
A: The theoretical peak bandwidth of 5G signal network calculated by using millimeter wave in the laboratory environment can reach up to 20Gbps, while testing 5G mobile phones in the laboratory environment can currently reach the maximum speed of 2Gbps, which is equivalent to a download speed of up to 200MB per second. However, the actual use, the signal interference, the base station apparatus the number of connections, bandwidth bottleneck server, like bandwidth bottleneck devices cause some impact on the actual average speed, even if the 4G network is very difficult to achieve 4G in normal use Peak speed, so the actual performance of the actual speed depends on the actual use scenario.
Q10: Why does my mobile phone clearly show 5G signal, but there is no 5G network speed and the network speed is too slow?
A: Confirm current network speed and the speed tested by the speed measurement software, and then answer according to different speeds.
Note: Most users will say "Mega" during voice description. Please confirm whether there is a "Mbps" (generally refers to how many megabytes of bandwidth or network) or "mb / s" (generally says how many megabits per second).
If the current speed measurement software is stable below 100Mbps, and the actual download speed is about 10Mb / s or below, use this phrase to explain:
A: At present, 5G networks in various places are still under active construction. According to the requirements of operators, as long as mobile phone supports 5G and the 5G switch is turned on, need to display 5G signals in areas covered by 5G networks, but the actual connection is 5G. The base station or 4G base station needs to be determined by the network operator. The mobile phone cannot be selected and connected on its own, so this situation may exist and is normal. It is recommended to visit some 5G experience areas or experience stores provided by operators to experience the high-speed network experience brought by 5G.
If the current speed measurement software is higher than 100Mbps, but lower than 1Gbps, and the speed measurement difference or fluctuation is large in different locations and different environments, but in most cases exceeds 100Mbps; the actual download speed fluctuates above 10Mb / s, but less than 100Mb / s; use this to explain:
A: The actual process of using 5G network, signal interference, the number of devices connected to the base station, server bandwidth bottleneck, equipment, etc. are bandwidth bottlenecks cause some impact on the actual speed, even the current 4G network has matured, and very difficult In normal use, the peak speed of 4G is reached, so the actual performance of the actual use speed depends on the actual use scenario. It is recommended to use it in different places and scenarios. In addition, if there are many 5G devices and connected users in the same 5G network base station, the speed of a single device in this network will also be affected.
If the current speed measurement software is stable at about 300Mbps, one must believes that the 5G speed should be much higher than this speed, reaching the promoted 2Gbps or third-party evaluation agencies' 800Mbps, 1.2Gbps, etc .; the actual download speed is above 20Mb / s, but less than 100Mb / s; can be explained using this:
A: According to the current operator's policy, if mobile phone card is still a 4G package, 5G basic services can be used on 5G mobile phones, at this time the maximum downlink rate will be limited to 300Mbps; if want to experience a higher network speed and bandwidth, contact the operator to switch to a 5G package and try again.
Q11: How to query 5G signal coverage? How do I check if I have a 5G signal?
A: It is recommended to contact the local operator to inquire about the 5G network coverage. It should be noted that the signal coverage of the operator is for reference only. The specific site conditions prevail.
Q12: Is the 5G signal good? What happens where there is no 5G signal?
A: 5G networks bring greater bandwidth and higher speed, and also limit the signal coverage of a single base station. A 4G base station can cover a coverage area of about 1 to 3 kilometers in radius, and now a single 5G base station can cover a range of only about 100 to 300 meters in radius. This has resulted in extremely difficult network coverage for operators. Businesses are stepping up the construction and coverage of 5G networks; mobile phones that support 5G networks also support existing 2G, 3G, and 4G networks. Where there is no 5G signal, mobile phones will actively connect to 4G or lower versions of the network to maintain mobile phones Data communication connection does not affect daily use.
Q13: Why is the 5G signal so poor / signal weak / frequently searched for 5G signals? (It is necessary to confirm that there is 5G mobile phone)
A: The advantages of 5G networks are higher network speeds, larger bandwidths, and lower delays, but the transmission distance and range of the corresponding signals are worse than 4G; in general, a 4G base station can make the radius within one kilometer. Mobile phone is used and connected to the 4G network, but currently a 5G base station can only cover a range of 100 ~ 300 meters in radius, and the same coverage area needs to build more base stations; therefore, the 5G network infrastructure and coverage will take a long time During this period, the 5G signal of any mobile phone will be limited, and it is not available everywhere like the current 4G.
Q14: Why does my S IM card often have no signal and cannot access the Internet, and a phone and X icon is displayed in the notification bar? Why don't 5G phones support CDMA / EVDO networks?
A: Due to the requirements of the current operators, 5G and CDMA & EVDO networks cannot be supported on one mobile phone at the same time. Supporting 5G networks cannot use CDMA & EVDO networks (even if the 5G switch is turned off). SMS and data Internet access. So S IM case of card users can use VoLTE in 4G (need phone card open this business, phone support, where the region has VoLTE network coverage) can make calls, send and receive text messages, connect to a network without the support of VoLTE Unable to use functions such as making calls and sending and receiving text messages.
When Xiaomi's 5G mobile phone is inserted into the S IM card, it will actively connect with the operator to check whether the VoLTE service is enabled. If it is not checked, the S IM operator will actively help mobile card to activate VoLTE (this feature is free). In order to facilitate daily use better; if fail to activate automatically after waiting for a period of time, it is recommended to exchange the mobile phone card back to the 4G mobile phone used earlier, switch to 5G mobile phone after activating VoLTE.
If still unable to make calls in some locations after activated VoLTE, and there is a phone and X icon in the notification bar, it is recommended to contact the operator to check whether the VoLTE network is available in local area.
Q15: Does 5G mobile phone consume more mobile data than 4G mobile phone?
A: 5G network and 4G network are the basic functions of mobile phones. The specific mobile date is not directly related to the basic functions. How much data is consumed is determined by different usage scenarios such as the visited web page, downloaded file size, and clarity of online video viewing. Under the same usage scenario, there will be no difference in mobile data consumed by mobile phones under 5G and 4G networks.
About networking and equipment support
Q16: Does my phone support 5G? Can the system be updated to support 5G later?
A: As of now, only Mi MIX 3 5G supports 5G networks, and other existing products do not support it. Due to the large differences in hardware, non-5G mobile phones on the market cannot support 5G through software upgrades and updates.
Q17: Which mobile phones support 5G now? When will Xiaomi support 5G phones?
A: Most of the current mobile phone products are still 4G network phones, which do not support 5G for the time being. Only a few mobile phone brands have released a small number of products that support 5G. As early as 2019 2 months, millet on the release of Mi MIX version 3 5G, 5G is the first launch of the global market one mobile products company, to 2 020 Nian there will be more 5 G cell phones.
Q18: What is SA? What is NSA? What's the differenc
