What are the advantages, disadvantages and functions of 3G mobile phones? Thank you, and God bless you. 3G is the third generation (also called 2G) technology in Britain. The third generation mobile phone has attracted much attention because it can realize video calling, surfing the Internet, watching TV and other functions. According to international practice, the commercial application of 3G technology generally adopts the access card system, which is what we usually call the license plate. Usually, operators are selected by auction, such as Vodafone in Britain and Hutchison Whampoa in China, all of which are qualified to provide 3G services in this way. Of course, these enterprises have also paid a high price. At present, the 3G standards supported by domestic mobile communication operators are not uniform. China Mobile supports WCDMA standard, while China Unicom mainly promotes CDMA2000 technology, which is based on its own equipment upgrade cost. The dispute between the two sides also led to the delay of the official attitude of the Ministry of Information Industry on the choice of domestic 3G standards. After all, it involves many issues such as independent intellectual property rights, national information security, industry development prospects, balance between service providers, and license issuance methods. Therefore, the domestic 3G network is still blank at present, and consumers should not expect many conveniences and services brought by 3G technology. Simply put, 3G mobile phone allows users to access Inter-based services on the move, and 3G will support more transaction functions, mainly used for mobile payment, mobile ticketing, mobile signature, games and so on. It supports faster data streams, mainly used for audio, video, personal pictures, personal data and so on. At the same time, 3G can also provide users with better security, mainly used in privacy, enterprise services, copyright, openness and so on.

What is the 3G function of mobile phone? Thank you, and God bless you. 3G is the abbreviation of English 3rdGeneration, which refers to the third generation mobile communication technology. Compared with the first generation of analog mobile phones (1G) and the second generation of GSM, TDMA and other digital mobile phones (2G), the third generation of mobile phones generally refers to a new generation of mobile communication systems that combine wireless communication with multimedia communication such as the Internet. It can handle images, music, video streams and other media forms, and provide a variety of information services including web browsing, teleconference, e-commerce and so on. In order to provide this service, the wireless network must be able to support different data transmission speeds, that is, in indoor, outdoor and driving environments, it can support at least 2Mbps (megabits per second), 384kbps (kilobytes per second) and 144kbps respectively. The third generation mobile phone can handle images, music, video streams and other media forms, and provide a variety of information services including web browsing, conference calls, e-commerce and so on. In order to provide this service, the wireless network must be able to support different data transmission speeds, that is, at least 2 megabits per second, 384 kilobytes per second and 144 kilobytes per second in indoor, outdoor and driving environments, respectively. The so-called 3G, in fact, is the third generation, which means the third generation digital communication in Chinese. 1995, the first generation of digital mobile phones, can only make voice calls; From 1996 to 1997, the second generation of digital mobile phones appeared, adding the function of receiving data, such as receiving mail or web pages; The main difference between the third generation and the first two generations is that the speed of transmitting sound and data has increased. It can handle various media forms, such as images, music and video streams, and provide various information services, including web browsing, teleconference and e-commerce. Compared with the first generation of analog mobile phones (1G) and the second generation of GSM, TDMA and other digital mobile phones (2G), 3G communication has many names, which are defined by ITU as "IMT-2000" (International Mobile Phone 2000) and called "UMTS" by European telecom giants. At present, there are three international standards for 3G mobile phones: WCDMA in Europe, CDMA2000 in the United States and TD-SCDMA proposed by scientists in China. Now "3G communication" is about to become the mantra in people's mouths, so do you know what 3G communication is? The so-called 3G, in fact, is the third generation, which means the third generation digital communication in Chinese. 1995, the first generation of digital mobile phones, can only make voice calls; The second generation digital mobile phones from 1996 to 1997 have added the function of receiving data, such as accepting emails or web pages; The main difference between the third generation and the first two generations is that the speed of transmitting sound and data has increased. It can handle various media forms, such as images, music and video streams, and provide various information services, including web browsing, teleconference and e-commerce. Compared with the first generation analog mobile phones (1G) and the second generation digital mobile phones (2G) such as GSM and TDMA, 3G communication has many names, which are defined by ITU as "IMT-2000" (International Mobile Phone 2000) and called "UMTS" universal mobile telecommunications system by European telecom giants. According to the standard, when the mobile terminal moves at vehicle speed, its data transmission rate is 144kbps, the outdoor stationary or walking speed is 384kbps, and the indoor speed is 2Mbps. However, these requirements do not mean that the available rate of users can reach 2Mbps, because the indoor rate will also depend on the detailed frequency planning in the building and the close cooperation between organizations and operators. The International Telecommunication Union (ITU) has determined three mainstream wireless interface standards for 3G communication, namely W-CDMA (Wideband Code Division Multiple Access), CDMA2000 (Multicarrier Wavelength Division Multiplexing Spread Spectrum Modulation) and TDS-CDMA (time division-synchronous code division multiple access). Among them, the W-CDMA standard mainly originated from the early third-generation wireless research activities in Europe and Japan. The system is used on the existing GSM network and can be easily converted by system providers. The main supporters of this standard are Europe, Japan and South Korea. At the end of last year, at&; T Mobile Services Branch also announced that it has chosen WCDMA as its third generation service platform. CDMA2000 system is mainly proposed by Qualcomm North America Company, and its construction cost is relatively low. Its main supporters include Japan, South Korea and North America. TD-SCDMA standard was first put forward by China, and cooperated with the international community on the basis of RTT. TD-SCDMA standard is completed and becomes a member of CDMA TDD standard. This is a pioneering work in the field of mobile communication in China, and also China's contribution to the development of the third generation mobile communication. In the competition with 3G standards proposed by Europe and America respectively, TD-SCDMA proposed by China officially became one of the global 3G standards, marking China's leading position in the field of mobile communication. 3G mobile phone is the product of the integration of communication industry and computer industry. Compared with the previous mobile phone, the difference is too great, so more and more people begin to call this new mobile communication product "personal communication terminal". Even the most layman in the communication industry can easily judge whether a mobile phone is the "third generation" from its appearance: the third generation mobile phones have a large color display screen, which is often touch-sensitive. 3G mobile phone can not only complete high-quality daily communication, but also carry out multimedia communication. Users can write and draw directly on the touch screen of 3G mobile phone and send it to another mobile phone, which may take less than one second. Of course, you can also send this information to the computer or download some information from the computer; Users can use 3G mobile phones to surf the Internet directly, check emails or browse the web. There will be many models of 3G mobile phones with their own cameras, which will allow users to hold computer meetings with their mobile phones and even make digital cameras "redundant". 3G communication is a mobile communication service introduced in the mobile communication market after the first generation of analog technology, and it has been introduced into the agenda in the vigorous development of the second generation digital mobile communication market. With the increase of data services and fixed access services (HDSL, ADSL, VDSL), 3G mobile communication system has also seen the dawn of the market, and attracted more and more attention from telecom operators, communication equipment manufacturers and ordinary users. W-CDMA means wideband code division multiple access, also known as CDMADirectSpread, which means wideband code division multiple access. Its supporters are mainly European manufacturers with GSM system, and Japanese enterprises also participate to a certain extent, including Ericsson, Alcatel, Nokia, Lucent and Nortel in Europe and America, as well as NTT, Fujitsu and Sharp in Japan. This system can be built on the existing GSM network, which can be easily transitioned by system providers. In Asia, where GSM system is quite popular, the acceptance of this new technology is expected to be quite high. Therefore, W-CDMA has inherent market advantages. CDMA2000 CDMA2000, also known as CDMAMulti—Carrier, was proposed by Qualcomm North America Company of the United States, and Motorola, Lucent and Samsung of South Korea all participated in it. At present, South Korea is the leader of this standard. The system originated from the narrow-band CDMAOne digital standard, and can be directly upgraded from the original CDMAOne structure to 3G, with low construction cost. But at present, CDMA is only used in Japan, South Korea and North America, so there are not as many supporters of CDMA2000 as W-CDMA. However, the research and development technology of CDMA2000 is the fastest among the current standards, and many 3G mobile phones have already taken the lead. TD-SCDMA is a 3G standard independently formulated by Chinese mainland. On June 29th, 1999, China Institute of Telecommunications Science and Technology (Datang Telecom) proposed to ITU. The standard integrates international leading technologies such as smart wireless, synchronous CDMA and software radio, and has unique advantages in spectrum utilization, business support flexibility, frequency flexibility and cost. In addition, due to the huge market in China, the standard has attracted the attention of major telecom equipment manufacturers, and more than half of the equipment manufacturers in the world have announced that they can support the TD-SCDMA standard.

What are the special functions, advantages and disadvantages of 3G mobile phones? What are the advantages of videophone? You can watch TV online (network TV replaces cottage antenna TV). 3G is actually a * * * network model. When we didn't turn on GPRS, it was in 2G mode. Only GPRS is 2.5G

What is the cookie function of mobile phone? Thank you, and God bless you. Cookies are text files in data. Txt format) is temporarily stored in your computer by the server so that the server can identify your computer. This paper briefly introduces what Cookies are, what functions cookies have, and what problems exist in using cookies in websites. What are cookies? Simply put, Cookies are text files in data. Txt format) is temporarily stored in your computer by the server so that the server can identify your computer. When you browse the Website, the web server will send a short message to your computer first, and Cookies will help you record all the words or some choices you enter on the website. The next time you visit the same Website, the web server will first check whether there is any Cookie information left by it last time. If there is, it will judge the user according to the content in the cookie and send you the specific webpage content. What does the biscuit do? Nowadays, many websites in the world are registered with new users. Sometimes they register and when they visit the website again, they will automatically recognize you and say hello to you. Do you feel very kind? Of course, this effect is only superficial. More importantly, websites can use cookies to track and count users' habits of visiting websites, such as when to visit, which pages to visit and the time spent on each page. Using this information, on the one hand, it can provide personalized service for users, on the other hand, it can also be used as a tool to understand all users' behaviors, which has certain reference value for the improvement of website management strategy. For example, if you check the flight schedule on the airline website, the website may have created Cookies containing your travel plans, or it may only record the pages you visited on the website. The next time you visit, the website will adjust the content displayed according to your situation, and put the content you are interested in first. This is an advanced Cookie application. At present, the most widely used Cookies is to record the user's login information, so that you don't need to enter the user name and password for the next visit-of course, this convenience also has the problem of user information leakage, especially when multiple users use a computer. In addition, some people think that the use of cookies on websites may invade users' privacy, but most users don't know much about it, and this kind of use of users' personal information is mostly used as statistical data, which may not necessarily cause direct losses to users. Therefore, there is no relevant legal constraint on the issue of cookies and user privacy. Many websites still use cookies to track users' behaviors, and some programs require users to open cookies to use them normally. IE browser users can decide whether to allow websites to use cookies to track their information by setting the privacy level in the privacy options, from all restrictions to all restrictions, or restricting some websites. They can also manually set up specific websites to allow or prohibit the use of cookies for editing. The default setting of IE browser is "intermediate"-some websites have restrictions on using cookie. Cookies settings of personal computer (IE browser) can be viewed and modified through the menu "Tools-Internal Options-Privacy".

What does 3G mobile phone mean? Thank you, and God bless you. 3 G is the abbreviation of the third generation in English, which refers to the third generation mobile communication technology. Compared with the first generation analog mobile phones and the second generation digital mobile phones (including GSM and CDMA now), the mobile phones based on the third generation mobile communication technology will be very different from the previous mobile phones. 3G mobile phone refers to a new generation of mobile communication system that combines wireless communication with multimedia communication such as the Internet. It can handle various media forms including voice, images and video streams, and provide various information services including web browsing, teleconference and e-commerce, and it is more secure and reliable. In different regions, 3G mobile phones provide different data transmission speeds, which can support at least 2Mbps (megabyte/second), 384kbps (kilobyte/second) and 144kbps in indoor, outdoor and driving environments, respectively, while most of us currently use a small "cat" with only 56kbps (kilobyte/second) for surfing the Internet. (? Is the current internet access condition really like this? It goes without saying that 3G mobile phone has almost all the characteristics of broadband Internet with its inherent advantages of high-speed transmission rate and huge information capacity, which will surely bring us an unprecedented mobile Internet space. At present, 3G technical standards are divided into three major schools in the world: W-CDMA standards represented by European manufacturers, whose supporters are mainly Ericsson, Alcatel, Nokia, Lucent and Nortel in Europe and America, NTT, Fujitsu and Sharp in Japan; The CDMA2000 standard headed by Qualcomm in the United States is supported by Motorola, Lucent and Samsung, and South Korea has now become the leader of the standard. There is also the TD-SCDMA standard proposed by China Datang Telecom. Its main supporters include local manufacturers, including Datang Telecom, China Putian, Southern Hi-Tech, Huali, Huawei, Lenovo, ZTE, China Electronics and Siemens.

Advantages and disadvantages of 3G mobile phones? Mobile 3g has slow speed, poor signal coverage, serious fever of mobile phone and short standby time;

Unicom 3G has the fastest speed and the largest usage in the world. It is recommended to go abroad frequently, with good signal coverage and poor professional and service awareness.

Telecom 3G speed is not bad, signal coverage is good, fixed telephones can be bundled, and the preferential margin is large.

How can a mobile phone be regarded as a 3G mobile phone? What are the functions of 3G mobile phone? Thank you, and God bless you. 3G is the abbreviation of the third generation mobile communication technology! The most popular explanation for this problem is that the network we are using now is a 2G network. We can make phone calls or send messages, and we can also use GPRS to surf the Internet. And 3G network is definitely much more advanced than 2G. It can make video calls, surf the Internet at high speed, watch movies and listen to music online, just like broadband in our home. In short, it has many applications. However, it needs to replace a 3G mobile phone to use the 3G network. There are three different 3G standards in our country. Unicom is WCDMA. This standard is used in many countries in Europe and America. So now many parallel mobile phones support the 3G function of WCDMA, and the 3G of telecom company is CDMA2000. The mobile company is TD-SCDMA. It is a 3G technical standard independently developed by China. The country hopes to compete with 3G technologies, such as WCDMA in Europe and CDMA2000 in the United States. So now TD-SCDMA3G network is handed over to China Mobile, the most powerful company in China. The main problem now is that there are few mobile terminals in TD. I hope that with the support of China Mobile, we can catch up in these two years.

Hope to adopt

Does Apple 3gs have wifi function? Is it a 3g mobile phone? Thank you and God bless you. You said Apple should have wifi. In Settings _ Wireless and Network _ _wlan settings, the smartphone has wifi. If they have wifi, it must be a 3G mobile phone.

What is a 3G mobile phone? Thank you, and God bless you. You can use 3G mobile phone ... We usually use 2G, and Unicom's 3G package will display 3G on the mobile phone, but non-3G mobile phones will not.

Hope to adopt

What is a 2G card in a mobile phone? What is a 3G card? What are the differences, advantages and disadvantages between them? Thank you, God help me. That's a good question. The main difference between 2G3G is faster network speed and richer personalized packages.

Please accept it, thank you!