The signal of the mobile phone card is very poor, what is the reason?

If you are using a Huawei phone and the number of signal bars in the status bar is sometimes high or low, or the " " symbol appears on the signal bar, we recommend that you take the following methods to try to solve the problem:

1. Whether a magnetic protective shell, metal protective shell, magnetic bracket or magnetic chuck is used.

If your phone uses a metal case, magnetic case, magnetic stand, or magnetic chuck, it is recommended that you remove it and try it, as metal and magnetic materials can easily interfere with the signal and cause the phone signal to deteriorate.

2. Change your current location.

1. In some closed indoor environments, such as houses with dense building spacing, the mobile phone signal may be blocked, resulting in poor signal. You can get outside to test if your phone signal is back to normal.

2. The degree of network coverage of operators varies according to different regions, and urban areas basically meet the coverage, but some remote areas may have insufficient coverage capacity, which will lead to poor mobile phone signal. You can determine whether it is caused by network coverage problems by whether the mobile phone signal is poor when you are only in the same area or the mobile phone signal status of nearby friends using the same carrier** card.

3. Check whether the APN settings are correct.

Incorrect APN settings will affect the normal use of the network.

2. Click the APN name to enter the APN setting interface.

3. Open the three dots in the upper right corner and click Reset to default settings.

Fourth, clean the SIM card and try to change the card cross-card.

1. Please take out the ** card to observe whether the metal surface is dirty or oxidized, and it is recommended to keep the ** card clean and try.

2. It is recommended that you change to another SIM card of the same operator, or change the SIM card to another mobile phone that supports this card. If the signal icons are all displayed as no signal, it is recommended that you go to the operator's office to check and replace the SIM card with a new one.

5. Reset network settings.

This operation will delete Wi-Fi and Bluetooth records.

If the problem persists after trying the above methods, we recommend that you back up your data in advance (WeChat and QQ must be backed up separately) and bring the relevant purchase voucher to a nearby Huawei Customer Service Center for testing.

The reason why there is no signal on the mobile phone is because the signal will be affected by various factors such as terrain, landform, and tall buildings during the propagation process, and if you are in a relatively closed place, the signal will be affected. Here's how to deal with it:

1. Turn the phone on and off again;

2. Swap the SIM card to a family member's or friend's phone and try again;

3. Check whether there is a signal from other Unicom users around;

1. Confirm whether to use third-party magnetic or metal accessories.

Please check whether you use metal protective shells, magnetic protective shells, magnetic brackets and other accessories, metal and magnetic materials are easy to interfere with signal reception, it is recommended to remove the accessories to view.

2. Check whether the current environment covers the operator's network.

If you are in a closed indoor environment (such as a basement, elevator, etc.), the mobile phone signal may be blocked, resulting in poor signal, you can go to an outdoor environment to check. If you are in a remote area and the signal may be poor, you can determine whether it is the cause of network coverage by using the mobile phone signal of the same operator's network in the vicinity.

3. Check the SIM card and verify the cross-card swap.

Observe whether there is dirt or oxidation on the metal surface of the SIM card, and check it after cleaning. If you use a tailor-made SIM card, it is recommended to replace it with a standard SIM card. Install the SIM card to another device, or install another SIM card to your mobile phone for comparison and testing to determine whether it is a SIM card failure.

If it is a SIM card reason, it is recommended that you go to the operator's office to replace the card.

4. Reset network settings.

Go to Settings - System Management - Backup & Reset - Reset Network Settings - Select the corresponding SIM card - Reset Settings, and then use View.

Note: Resetting network settings resets Wi-Fi, mobile data, and Bluetooth connection records.

5. Service center testing.

If the above methods fail to solve your problem, please back up your mobile phone data in advance, bring your mobile phone and purchase voucher to vivo customer service center for testing, you can pay attention to WeChat***"vivo" or "vivo customer service" to inquire about the service center address**, it is recommended to contact before going to ensure that there is a staff reception before going over, so as to avoid delaying precious time and running in vain.

What is the reason for the sudden freezing of the mobile phone Internet signal? Teach you four tricks to effectively improve your signal.

1. Analyze the reasons for the poor mobile phone signal.

1. The mobile phone system settings are not perfect.

With the continuous development of science and technology, the multi-function of smart phones is getting better and better, but in the process of use, it is still difficult to avoid problems such as poor mobile phone signal or no signal in urban buildings, sudden network disconnection or slow network use, what is the reason? First of all, the system problem on the mobile phone itself,Diversified functions of smart phones,Occupy a large area in the background setting,There will be some lack of skills,Plus the manufacturer in order to cater to the public aesthetics,The design of the fuselage is getting thinner and thinner,Hiding or omitting the transformation of the mobile phone antenna design is also a factor that leads to poor signal。

2. Caused by mismatch of mobile phone card.

The second is the mobile card supported by the mobile phone, presumably there will be some friends who do not know, which mobile card will be better for their mobile phone card, because each smartphone model supports different, and the card slot design is not the same, and a card will be cut, and there may be problems.

Second, the way to solve the problem of bad mobile phone signal.

1. Check the mobile phone signal sign, if the signal is weak, try to get out of the weak signal area to a relatively wide area to call**;

2. You can try to turn on and off the airplane mode to try to restore the mobile phone signal. Or shut down and reboot.

3. The quality of signal reception can be improved by walking;

4. Receive calls in a normal network environment, avoid bustling business districts, peak hours, bad weather, and electromagnetic interference zones;

5. The metal protective case will affect the signal reception of the mobile phone, if the mobile phone uses a metal protective case, remove the protective case and try.

6. After flashing, the signal problem cannot be solved after the above methods, and there may be a problem with the system. In this case, you can try the method of flashing the system to restore the system.

What are the causes of a bad cell phone signal and how to fix it?

1.When the signal is not good, the first thing we need to check is whether the SIM card in the mobile phone is normal, sometimes it may be that the location of the SIM card is wrong, so we can check it. If that's the reason, then just reinstall the SIM card.

2.The second situation may be that when you are in the suburbs or rural areas, the mobile phone will have no signal, which may be because the mobile phone signal has become a blind spot. This is caused by insufficient coverage of the base station, that is to say, if you are far away from the base station, then the signal of the mobile phone may not be very good.

In addition, this can also happen when you are in the city, because the signal is blocked by buildings. In this case, our best solution is to find a location closer to the base station and use the phone.

3.The signal of the high-rise mobile phone is relatively poor, the main reason for this is that the signal of the high-rise is transmitted by several base stations, but the mobile phone is frequently switched between several base stations, and the signal will be relatively poor. At this time, what we need to do is to let the mobile phone switch between the various base stations as little as possible.

That is, our best.

In addition to environmental problems, the hardware of the mobile phone itself can also cause poor mobile phone signal. The SIM card inside the mobile phone is an important carrier of our mobile phone signal reception, and if the card is often pulled and replaced after a long period of use, it will definitely cause wear and tear, and it may make the SIM card unable to be recognized and read, resulting in poor signal. In addition, there is also the problem of poor signal transmission caused by the mobile phone's own receiving base station.

As we all know, the signal of the mobile phone is received by the base station, and if there is a problem with the base station or something, the signal transmitted is not strong, and the mobile phone signal will become very poor. Moreover, the strength of the base station signal depends on which operator built it, and the mobile signal will be relatively stronger than the Unicom signal, because the mobile signal covers a wide range and the signal receiving base station construction is more, so the mobile phone signal can receive a strong mobile phone signal within the corresponding base station range.

If the amount is large, it is also one of the reasons for the poor mobile phone signal. ** When the signal emitted by the base station built by the same operator is rushed to receive by everyone, and the base station construction within the range is relatively small, it will cause the phenomenon of mobile phone signal congestion. Therefore, in places with a lot of people, such as high-speed rail stations and railway stations during the New Year's holidays, the mobile phone signal is relatively poor.

It is possible that the main reason for disturbing Tong is the distribution of base stations and the quality of mobile phones.

1. The mobile phone will first propagate the signal to the base station, and then the processor of the base station will propagate to the nearest base station in the area where the opponent's mobile phone is located, and then send the signal to the opponent's mobile phone. The service range of each base station is limited, and the signal will gradually weaken with distance, if you happen to be on the edge of the service range of a base station, the signal will be relatively weak. In addition, electromagnetic waves propagate in a straight line, and obstacles will not be bypassed, and if they encounter obstacles that hinder the propagation of electromagnetic waves on the way to propagate, it will have a serious impact on the signal.

Therefore, when we are in the basement or elevator, we often encounter signal loss. In addition, certain materials inside the building can also hinder the propagation of electromagnetic waves.

2. Another reason for the weak mobile phone signal may also be the quality of the mobile phone, we sometimes find that some brand mobile phones have a stronger ability to accept signals than other mobile phones, for example, in rural areas, some mobile phones are too far away from the base station, resulting in no signal, or the signal is very weak, but some brand mobile phones with strong signal acceptance still have a few signals, so this is also related to the mobile phone signal acceptance ability.