Then set up the 2G network, why did it become a 2G network

Go to Mobile Data Management.

Find Settings and select Network.

In order to solve the problem that users may encounter about"There has never been a high quality, but there is a wow"Please note that the solution is for reference only, and does not mean that this website agrees with its opinions, if you have any questions, please contact this website. "There has never been a high quality, but there is a wow"The related detailed questions are as follows: There has been no quality, but there is one that has been wowed.

The phone suddenly changed from 4G to 2G because 4G was not activated.

First of all, we open the mobile phone settings option, you can see that the current network status of the mobile phone is 2G, then click to enter the settings page, find wireless and network, click to enter, find the mobile network option in the network settings, click on the mobile network to see the status of the current network, if you want to restore the 4G network under the 4G card, you can click to enable 4G, and finally we can see that the status of the mobile phone network has changed to 4G status.

Cellular network considerations

Keep your phone system version and app up-to-date, as there are bugs and vulnerabilities that will be fixed by the phone manufacturer or app developer. Do not connect to public WiFi and scan*** because you don't know if it has been implanted with unknown programs.

Unknown links and unknown links do not click, clicking on links and ** can be used by malicious programs. Be cautious when installing mobile phone applications, try not to be safe for informal channels, as long as the applications developed by well-known companies can generally be on major mainstream application platforms**.

China Mobile currently has 4G, 3G, 2G networks, and at present, China Mobile is vigorously promoting 4G cards, so the new SIM cards are all 4G cards and can no longer be replaced with 2G cards. However, the 4G function can be turned off, but it is not necessary to switch to 2G directly.

There are two main ways to turn off the 4G function, one is to set it on the mobile phone, and the other is to let 10086 turn off the function.

1. Turn off the mobile phone - just set to turn off the 4G function in the settings, but there is still the function on the SIM card.

Apple: Set Cellular Cellular Data Options to enable 4G (select Off).

Off – Turn off the function directly on the SIM card, no matter how the phone is set up, it will not work.

Dial 10086 directly to turn off the manual verification password, but due to regional process problems, the service cannot be canceled in some areas, and it is usually recommended to close it by setting up the mobile phone.

At present, most areas are covered by 3G networks, after turning off 4G, they will basically automatically switch to mobile 3G networks, unless there is no 3G network, they will directly switch to 2G; Another situation is that if the mobile phone does not support 3G, after turning off 4G, it will also be directly converted to 2G.

How to make a mobile phone 2G network into 4G, no matter where it is, it is a 4G network.

The mobile phone cannot use the Unicom 3G 4G network, which cannot be ruled out in the following situations:

1. China Unicom 3G 4G** has not been used or has not enabled the 3G 4G Internet access function;

2. The mobile phone does not support China Unicom's 3G 4G network;

3. The location has not yet covered the 3G 4G network of China Unicom.

4. The city where it is located has Unicom 3G 4G network coverage, but the mobile phone is in a remote or poor coverage blind spot.

1. Choose a high ground to use your mobile phone.

In the past, in my hometown, the mobile phone on the first floor of Zazen was often in a state of no signal, but after the mobile phone was brought to the second floor to use, the mobile phone signal was basically three or four bars, and it was relatively stable. Therefore, when the signal is not good in the shed where you are located, you may wish to go to a higher position and use it in a place where the window is biased, and many can solve the problem of poor mobile phone signal.

2. Switch between different mobile phone networks.

There are three major network operators in China, namely China Mobile, China Unicom and China Telecom. These three network signals exist at the same time, when you use the mobile land and dust network, when the signal is not good, friends with conditions may wish to use telecom or Unicom card, so that many times you can resolve the problem of poor mobile phone signal.

3. Mobile phone signal amplifier to enhance mobile phone signal.

At present, a hot-selling device called mobile phone signal amplifier on the Internet is popular among users in remote villages, basements, and families or communities with poor mobile phone signal. A cell phone signal amplifier can amplify the cell phone signal around us, which can improve the quality of the network. It is very practical for users in some of the lower residential areas, basements.

At present, buy a mobile phone amplifier online, ** generally in one or two hundred yuan, the installation is relatively simple. The device mainly has an antenna, we install the antenna outdoors, the receiver can be placed at home, to achieve the mobile phone signal method, support China Mobile, China Unicom and China Telecom and many other mobile phone network amplification.

Summary. Dear, hello, I'm glad to answer your questions, for you to find out how to set up a 2G 4G network on your phone How to switch to a 2G network, first 1, after turning on the phone, find and click "Settings". , and then on the settings page, tap Mobile Network.

3. Turn on the data network, if the data network has been turned on, skip the step 4, and then click "Network Mode", the network mode has 4G or 3G or 2G priority. 5. Finally, select the first mode, 4G priority.

How to set up a 2G 4G network on your phone How to switch to a 2G network.

Fast. Dear, hello, I'm glad to answer your questions, for you to find out how to set up a 2G 4G network on your phone How to switch to a 2G network, first 1, after turning on the phone, find and click "Settings". , and then on the settings page, tap Mobile Network.

3. Turn on the data network, if the data network has been turned on, skip the step 4, and then click "Network Mode", the network mode has 4G or 3G or 2G priority. 5. Finally, select the first mode, 4G priority.

Extended data 2 3 4G network difference 4G and 3G The main difference is that the supported network standards are different, 4G can use 4G network, backward compatible with 3G and 2G, the network speed is much faster than 3G and 2G, 3G network standard does not support 4G, 3G is compatible with 2G, and the network speed is slower than 4G. In terms of network speed, 2G, 3G, and 4G networks are all communication technologies that support high-speed data transmission. Generally speaking, 2G networks are the slowest, 3G networks are faster, reaching several megabits or even 20 megabits per second, and 4G is undoubtedly higher, reaching 100 megabits per second.

In terms of popularity, 3G services are the most widely used, and the scale and technology are also the most mature. The 4G network is still in trial operation, and it is not particularly mature in technology, so it is naturally difficult to popularize, but this phenomenon is slowly changing.

The network has become 2G, and there are three ways to solve it:

1. Confirm whether your mobile phone supports 4G or 5G, if it does, it still displays 2G, then enter the mobile phone to set up the Caizen Min List, select the mobile network, there is a switch to start 4G or start 5G, you can turn off 2G and upgrade to a higher network.

2. Confirm whether the mobile phone signal around you supports 4G or 5G, if other mobile phones are still like this, then test it again in another place.

3. Restart your phone to see if there is a problem with your phone's baseband.

The 2G network is still available:

The 2G network is the second generation of wireless cellular** communication protocol, which is represented by the digitization of wireless communication and can carry out narrowband data communication. Up to now, the 2G network is still working, but now on the mobile signal transmission towers in most places, the 2G signal transmitter has either been dismantled or deactivated. After the popularization of 5G, it is estimated that the transmitters of 2G and 3G may be completely dismantled, because no one uses it to drive and consume electricity, and it also increases the weight of the tower, which has potential safety hazards.

First of all, we rule out external reasons, such as the mobile phone does not support 4G or does not turn on the 4G switch, and then the local 4G network coverage, but also have a 4G mobile phone card, and open 4G**, after meeting the above situation, let's analyze why the mobile phone's 4G network sometimes suddenly converts to 2G, it may be due to the following reasons:

Since 3G and 4G were built later than 2G, there are fewer sites in most places. 2G uses the 900MHz band, 3G uses the 2000MHz band, and 4G uses the 2600MHz band. The higher the frequency band, the worse the penetration effect, and the worse the indoor coverage.

This also explains why the current 4G network cannot receive the signal in some closed places, because the penetration is not enough, even in the city, the mobile phone that enters the closed environment can only receive the 2G network with the best coverage progress and signal penetration.

The capacity and interference of different systems are also different. Today's 3G and 4G technologies at the physical layer are self-jamming technologies, which simply share bandwidth, and the more users there are, the greater the impact on each other, and the lower the overall capacity of the cell. When the base station finds that the user's signal is poor or the network capacity is insufficient, the network will let the mobile phone reselect or switch to the network frequency band of the low-end standard, which can ensure the overall experience of the high-end system.

Another situation is that operators need to protect existing investments and allocate users strategically. When operators build new 4G networks, they do not immediately want all users to be on 4G, but also want 2G and 3G to be fully utilized. Therefore, some policies will be used to control users to only work on 2G or 3G networks, because some operators have re-deployed the network, if all user resources are placed in the new network, then the previous construction will be wasted, and it will also cause congestion on high-frequency networks, which is not conducive to user experience.

In the elevator, or in the room with more steel bars in the building structure, the radio signal will be shielded, and 4G is still because of the high frequency, and there is no good penetration of the 2G network signal, and the signal will fall back to 2G.

Due to the high radio frequency, the coverage of a single base station is not as wide as that of 2G and 3G networks, which will cause the signal to become 2G when leaving the 4G coverage area.

The call voice is all 2G, and the vast majority of the market does not support SGLTE mode when calling, that is, during the call, the network will fall back to 2G and sometimes the network will be disconnected, and it will rise to 4G signal when it hangs up.

Are you running out of traffic?

Is it that you are not in the place where your mobile phone card belongs, and at the same time, there is no national traffic in your **, only local traffic.

There may be a problem with the network parameter settings in this area.

Maybe the 4G switch in the phone was inadvertently turned off.

The location is at the edge of the 4G network coverage area.

Poor signal quality is possible.

If you cannot use the 4G network of China Unicom, we recommend that you use the following conditions to troubleshoot the 4G network:

Use China Unicom 4G** or have opened 4G network function;

The mobile terminal supports China Unicom 4G network;

The location has coverage of China Unicom's 4G network;

The number card is a USIM card.

You can check whether the above conditions are met, and you can only use the 4G network after you meet them, if you still can't use the 4G network after eliminating them, it is recommended to consult the local Unicom customer service to check whether the base station facilities are faulty.

4G network to 2G can be changed in the phone settings, network options.

Just change the network settings.

How to make a mobile phone 2G network into 4G, no matter where it is, it is a 4G network.

What phone? Generally, it can be changed to only 2G in the network settings