What are the benefits of 3G to 4G, and how to change from 3G to 4G

What are the advantages of 4G over 3GFirst of all, compared with 3G communication technology, the most obvious advantage of 4G communication technology is call quality and data communication speed. At present, the most mature technology in the 3G standard is WCDMA, which can bring users a data transmission rate of up to 2Mbit S, which can be achieved by the CDMA2000 system. The WCDMA used by Japan's NTT Docomo and J-Phone can reach a rate of 8Mbps. But compared to the transfer rate of 4G, this is really nothing.

The 4G network has a data** capability of 100 Mbps, and the upload speed can reach 10 Mbit/s, and Huawei's LTE downlink peak rate test reached 173 Mbps, setting a new record for the highest peak wireless transmission rate. This rate is 10,000 times the current mobile** data transmission rate, 2,000 times faster than the current dial-up Internet, and 50 times the 3G mobile** rate. Secondly, from the perspective of channel indicators, 4G is significantly different from 3G.

In the 3G technical standard, the bandwidth occupied by WCDMA is 5MHz, TD-SCDMA occupies bandwidth, and CDMA2000 occupies bandwidth; According to the executive of AT&T, which studies 4G communications, it is estimated that each 4G channel will occupy 100MHz of spectrum, which is equivalent to 20 times that of the WCDMA network. The international standard WiMAX occupies a bandwidth of up to 20MHz, but China's 3G does not have this standard and is not discussed in this article. Again, from the content point of view, the core applications of 3G are mobile broadband Internet access, calls, mobile TV, mobile phones, mobile shopping, wireless search and mobile online games, etc.; 4G, on the other hand, will provide even higher performance for mobile phone convergence** content and become a personal identification device via an ID app.

It can also accept high-resolution movies and TV shows, thus becoming a link in the new infrastructure that merges broadcasting and communications. Of course, all technical standards must be implemented in the end, which involves the issue of cost. In terms of voice cost, the cost of 3G voice is about 50% of the current second-generation mobile communication voice cost, and the manufacturing cost of 3G mobile phone is about 120% of the manufacturing cost of the second-generation mobile phone.

Although the emergence of 3G mobile phones has driven the trend of domestic mobile phone tariff reduction, the tariff advantage of 4G is more obvious. It is understood that in technology, 4G is expected to integrate different modes of wireless communication——— from wireless LAN and Bluetooth and other indoor networks, cellular signals, radio and television to satellite communications, mobile users can freely roam from one standard to another standard within the 4G network. Because of the strong technical advantages, 4G wireless instant connection and other services will be cheaper than 3G.

Through the above comparison, it can be seen that the best performance and network capabilities of 4G will fully meet the needs of the world's fast-growing mobile broadband users, which is more advanced than 3G!

The basic function of 1G is calling, that is, voice; The basic function of 2G is SMS, that is, text transmission, and the others are very weak; The basic function of 3G is ** transmission, and the others are very weak; The basic function of 4G is real-time transmission, which is often referred to as online video and audio.

The specific steps to convert from 3G to 4G are as follows:

Tool: Xiaomi Mi 6

1. Find "Settings" on the desktop of your phone and click to enter the settings interface.

2. Find the option named "Mobile Network" in the menu bar of the settings interface and click to open.

3. Find the option named "Network Mode" in the menu bar of the mobile network settings and click to open it.

4. After that, select 4G priority to convert the 3G network to 4G.

3G mobile phones can not support 4G network, you need to replace the mobile phone that supports 4G network, at present, the Ministry of Industry and Information Technology has approved the 4G mobile phone Samsung N7108D, Huawei D2-6070 (TD-LTE version ZD), Sony M35T (Xperia SP TD-LTE version), ZTE U9815 (Grand Memo TD-LTE version) and so on.

If the mobile phone is not replaced with 4G, SIM card or not opened 4G network, generally turned on 4G can only use 3G network, for this situation you can call back to the operator ** to consult, whether their mobile phone card has opened the 4G network, and whether to open 4G service. For Unicom telecom card, in fact, there is no need to change the card, and you can directly upgrade the 4G network.

No, 3G mobile phones cannot support 4G by flashing and other methods, and the network standard supported by mobile phones is determined by hardware, so it cannot be changed.

Hardware problems, which cannot be changed, cannot be solved by software. You can only change the SIM card and change the mobile phone. If 3G can use 4G, it will be meaningless to update the mobile phone now. Seek adoption.

To change a 3G phone to a 4G phone, there are several options:

1.Buy an Apple Bluetooth skin and install it according to the product instructions. This method will not destroy the hardware structure of the mobile phone, and it is relatively simple to use in the form of cracking the 4G network (limited to Android machines, and the iOS version of the 4G network Apple Bluetooth skin is under development).

2.Replace a mobile phone motherboard that supports 4G network (the structure must be the same). This method is relatively complicated, and it is best not to try to replace it unless you have strong hands-on ability (the phone cannot be repaired after replacement because it is disassembled manually).

3.Re-purchase or exchange a phone that supports 4G networks. This method will cause certain economic losses, it is recommended to go to the after-sales service to verify the authenticity of the product before buying or exchanging, so as not to be deceived (when encountering the white wolf with empty gloves, the economic loss is the heaviest).

It can't be changed, unless you buy one that supports 4G, just like the straight board machine back then, it definitely can't support 3 4G.

There are two ways to replace your card:

1. Go to the business hall to change: It is very simple to go to the business hall to change the card, you only need to bring your ID card and the original mobile phone card to change the card.

2. Replace it online:

1) After entering the 10086 online business hall, find the 0 yuan card replacement under My Mobile.

2) Enter the interface of 0 yuan card replacement and log in with your mobile phone number.

3) Click (Login Shipping Information) and fill in the name of the contact. When choosing a USIM card, it should be noted that the new USIM card supports all mobile phones except the Apple 5 5S 5C. Of course, the new version of the Nanou USIM card only supports Apple 5 5S 5C mobile phones.

4) Fill in the address of your location.

You can go to the counter of your mobile phone number operator to upgrade, and you don't need to change the number, however, the mobile phone needs to be replaced, because the three-G mobile phone cannot use the 4G function.

First of all, you have to support the 4G card on your phone.,After that, your card also has to be 4G.,The rest is in the phone notification (pull down from the top,The page with airplane mode),Just look at it.。。。

Whether it is broadband or mobile phone, broadband is directly upgraded, and the mobile phone can be changed from the operator.

If you change from a 3G network to a 4G network, you need to activate 4G network services and replace the necessary hardware

1. Go to the operator counter corresponding to your mobile phone number to upgrade and activate the service.

2. Don't change the number, but change the 4G mobile phone SIM card. It usually costs 10 yuan.

3. The mobile phone should support the 4G network, because the 3G mobile phone does not have the function of 4G.

It's OK to go to the business hall to apply for a 4G card, but at the same time, your mobile phone must also be 4G.