There is no signal on the mobile phone where there is a computer

1. The nearby signal is not good.

Ask someone nearby to determine if the signal quality is poor in the neighborhood. This is also not uncommon, both in cities and in mountainous areas. If the situation is more serious, it is recommended to contact the operator for a solution.

Second, the signal is blocked.

In some large exams or near the security center, there is a signal blocking device, and if the mobile phone arrives here, no matter how good the performance is, there will be no signal. Please see if there is such a shielding device nearby.

3. There is a problem with the SIM card.

It may be that the sim is taking too long and is broken. You can try to install this SIM card in another mobile phone to determine if this is the problem.

Fourth, the SIM card has been maliciously copied.

There is also a possibility that the SIM card has been maliciously copied by criminals. Especially when you have a lot of online banking, some criminals may maliciously copy your SIM card through the network, and then steal your online banking through the copied SIM card. At this time, your SIM card has no signal.

5. Temporary malfunction of mobile phone.

This happens from time to time, and it can be more frequent when your phone is not performing well. Turn airplane mode on and off or turn it off, or turn it off and restart.

Sixth, the mobile phone antenna is broken.

Every mobile phone has an antenna that is used to receive signals. If there is a problem with the antenna and the signal cannot be received, the phone will show that there is no signal. At this point, you'd better change your phone.

7. Mobile phone performance problems.

Some mobile phones have signal problems by themselves, and it is recommended not to buy such phones as much as possible.

The computer must not have a router installed.

What signal are you referring to? Please tell us more about it, and it may help you solve it.

Category: Electronic Digital >> Other Digital Products.

Analysis: Poor signal is usually caused by network reasons, which may also lead to problems such as SMS delays. There are generally several reasons why a call may be interrupted due to network issues.

First of all, the mobile phone is in the signal blind zone, which will cause the phenomenon of "not in the service area" or call interruption, which includes outside the network coverage area, such as suburbs and rural areas where network communication facilities have not yet been built, and in the city where the mobile phone is blocked by shielding and the signal is not covered, such as in the elevator, underground places, buildings, etc.

Secondly, it is the phenomenon of bad signal due to interference. Since the mobile phone receives signals through the propagation of electromagnetic waves, the base station establishes a connection between the transmitted radio waves and the mobile phone, so as to achieve the purpose of voice call. Therefore, the interference of electromagnetic waves can have a negative effect on mobile phones.

When the interference of certain electromagnetic waves in the air exceeds a certain level, and the signal-to-noise ratio of the mobile phone is reduced below the standard value, the mobile phone will have no signal or drop out. Therefore, it is best for consumers to stay away from devices that can emit powerful electromagnetic waves and go to places with little interference to talk.

Again, the disconnection is caused by the failure of the cross-zone switch. Network operators serve users by transmitting wireless signals from base stations, and the range of base stations is limited, so there may be many base stations in an area. All the base stations are combined into a network system, each base station has its own range, beyond this range, the mobile phone has to replace the base station, so as to keep the mobile phone always in the network.

When a user surpasses a service cell to another service cell during a call, the user's voice channel also needs to be switched from the original service cell, but if the new service cell is busy at this time, and there is no extra channel allocated to the user, the handover of the service cell will fail, so the user's call process will also be interrupted. Adding base stations can alleviate this situation appropriately, but at the same time, it will also increase costs, and too many base stations will also increase radiation and pollute the environment. Therefore, how to not increase the number of base stations, but also make it not easy to drop the line when switching across the area, is a problem that network operators focus on solving.

In addition, due to temporary network failures, or the network is particularly busy, it will also cause poor mobile phone reception. For example, in the bustling business district, there may also be a situation where the ** cannot be dialed out or called.

In addition to the poor signal caused by the network, it is also a problem with the user's mobile phone. The SIM card contacts of the mobile phone are dirty, which will also cause the reception and transmission signal to be poor, so just take out the card and wipe it clean. There are also mobile phone users who have taken some "special measures" - when the mobile phone is turned on, the battery will be unplugged, and there will be a "not in the service area" response effect, it is reported that some people are currently using this method to evade the connection.

However, the staff of the repair center advises everyone that using this method often will shorten the life of the SIM card and eventually cause damage to the phone.

You can do it from a window or balcony, because the base station is far away from yours and the signal is weak.

If there is no signal on your phone or an emergency call prompt is displayed on the screen, it is recommended:

2.If it is a dual-SIM phone, please check whether the SIM card is activated: Settings - SIM Manager - SIM1 SIM2 - Click the SIM card icon - slide to turn on (the operation mode may be slightly different for different models of mobile phones).

3.If there is still no signal, it is recommended to turn off the SIM card and remove it, wipe the SIM card chip with an eraser, and then reinstall it.

4.If it doesn't work, try to change to another location to rule out whether it is caused by poor signal coverage in your location.

5.Try to change the network mode to 3G or 2G (do not select the auto-connect mode). Note: Some machines do not support changing the network mode.

6.Try to change another SIM card.

7.Update your phone's system version: Settings - About Phone (About Device) - Manual Update Automatic Update (Software Update System Update - Update). Note: Please back up the data (contacts, messages, **, etc.) in your device before upgrading.

There are many possibilities for a phone to suddenly have no signal at home:

1. The SIM card has deteriorated. If the SIM card is used for too long, the surface of the card will be worn to a certain extent, which will lead to unstable signal, you can take out the card and replace it on other mobile phones to try, determine the problem of the SIM card, you can go to the larger business hall to apply for a replacement card button next to the key.

2. If there is a problem with the hardware of the mobile phone, you can only go to the after-sales service of the mobile phone for maintenance, or replace it with a new mobile phone;

3. Setting problems, such as setting to airplane mode or no network mode, where the mobile phone signal is displayed on the top of the mobile phone, such as the draft difficulty, there is an airplane logo, which means that your mobile phone is turned on the airplane mode and needs to be turned off by itself;

4. Entering a place without service or a place with no signal. Find an open place outside your home to see if your phone has a signal, if there is a signal, it means that the signal is too weak at home.