Why doesn't my phone support mobile communications? Lost network? Can't get through? Is your battery draining quickly? There is a solution to the problem

First you need to check whether there is any sign indicating that the network signal is generally in this moment Yes, because it often happens that a network is selected that is not supported by the operator. The necessary information can always be found in the settings. However, it may also be that the reason must be sought in the telephone itself.

The phone does not search for the network or has stopped receiving it

It may happen that the amplifier has failed, meaning the transmitter power. If this problem occurs, it is necessary to replace the components. Unfortunately, you won’t be able to carry out this work yourself; you will need the help of a specialist. In this case, you may need to replace:

Transmitter power amplifier;
- antenna;
- reader SIM card;
- SIM connector;
- SIM card holder;
- SIM card controller and others.

The network has disappeared

A possible cause may be a failed radio path. This device is quite complex, since it is connected to a large number of various elements. Therefore, it will be impossible to determine the cause and carry out repairs at home. To find out the real reason breakdown, it is necessary to carry out a full diagnosis of the device. It is worth contacting a specialist who will not only help find out the cause, but also eliminate the breakdown.

The device began to have difficulty catching the network

This option initially assumes that the antenna is broken. This problem occurs quite often, since the antenna itself is a rather fragile element of the phone and when dropped or subjected to a strong impact, it becomes deformed, which leads to breakage. To solve this problem, it is worth replacing the antenna completely.

The network is periodically lost

In most cases, the culprit for this situation is the owner of the telephone itself, since even a small amount of moisture that gets inside the device can seriously affect its further operation. It is necessary to conduct a full diagnosis and, having identified the cause, eliminate it immediately. This process cannot be delayed, since moisture entering the device will lead to the formation of corrosion.

The phone shows that there is no network and does not look for it at all

This option is possible if a problem occurs with the device program, in other words, the device program has crashed. The only way out of this situation is to flash the device. It is important to contact a specialist, since it is unlikely that you will be able to reflash the phone yourself.

Qualified specialists will help you carry out high-quality diagnostics, identify the problem and repair your telephone.

What to do if the phone does not receive or loses the network? If you watch this video, then this is a problem again. We will explain the reasons simply, this video is not about how cellular communications, satellites and fiber optic cables, etc. work. This video is about how to find out what is the reason for the loss of signal: in the device itself or in third-party circumstances?

Samsung Guide channel video.

Anyone mobile operator The network is built using base stations - towers. Each has its own coverage area. The quality of communication depends on how closely the area of ​​each base station is adjacent to each other. When a phone moves from the area of ​​a certain tower, the system automatically determines the direction of movement and transmits a signal from it to another. The subscriber does not notice transitions when the zones of several stations intersect. You can move, talk and use the Internet freely. But it happens that there are gaps between zones. In this case, the subscriber has no connection until he moves.

There are several network modes: 2G – E – second generation. When the phone receives reception, the letter E appears at the top. In the settings it is designated as GSM 3G - H+ - third generation, the H or H+ icon appears. In the settings it is designated as WCDMA. 4G is the fourth generation, it is displayed on the screen, in the settings it is designated as LTE.

The coverage area varies for different communication standards. For example, 2G always has slightly more than 3 or 4G. There are certain rules for switching between these modes. The device always strives to connect to a newer and faster mode. That is, if you are in an area with a strong 2G signal and a weak 3G signal, the device ignores a high-quality 2G signal and picks up a weak 3G signal. The result is poor communication. Change the network mode to a more stable 2G for a while to eliminate the possibility that the phone is in an area with a low signal. Go to settings – Other networks – mobile – mode – GSM – this is 2G. If the device works fine with a 2G signal, this means you are in an area of ​​poor 3 or 4G reception. It makes sense to contact your mobile operator for help. If the phone doesn’t even receive 2G, we’ll look into it further.

Perhaps your SIM card is simply worn out or damaged. Replace it. The connection does not appear, then test the operation of the smartphone with a SIM card from another operator. This is necessary for the phone to register in a different network and at other base stations. If the smartphone receives normally, it means that the connection problem is on the operator’s side.

If the phone also works poorly, it is necessary to exclude the possibility of software malfunctions. To do this, a reset is used, which serves to eliminate accumulated errors in the device’s operating system. How to do this correctly, watch the video below. As a result of resetting the settings, all data will be erased, and errors will go away with them. If this method does not help, we use heavy artillery. The service center can do two things: update the software and replace faulty parts. The firmware is installed, excluding errors that may remain during an independent update. Well, we don’t recommend changing parts yourself at all.

MegaFon boasts a decent coverage area cellular communication– it is present in almost all regions, so communication problems rarely occur. Stable reception, high-quality voice services, relatively fast Internet - this is what this operator can please us with. Let's see what to do if there is no network on MegaFon. This happens rarely, and there are many reasons for this.

Operator's technical work

If the MegaFon network on your phone has disappeared, you should immediately do one simple operation– reboot your mobile phone and wait for re-registration on the network. This procedure is universal, that is, you should restart your phone every time it stops seeing a cellular network signal- only after this other actions are performed.

If rebooting your phone doesn't work visible results, it is quite possible that MegaFon is holding some events online. This may be the reason for lack of reception. In order to check your guess, it is advisable to somehow clarify whether other subscribers have reception. If the lack of communication is widespread, then the problem lies in technical breakdowns or work on operator equipment - wait 20-30 minutes, then try to reboot your phone.

The phone is damaged

Unfortunately, none mobile phone is not insured against breakdown - it is simply impossible to ensure 100% reliability with current technologies. If you notice the absence of a network on MegaFon on your phone and its presence on other people's handsets, most likely something has happened to your device. You can check the functionality of your mobile phone using another SIM card. If your mobile phone still does not work, have it repaired by choosing a good service center.

The SIM card is damaged

Some subscribers perceive the facts of SIM card failures with surprise on their faces. In fact, there is nothing surprising here. Like anyone else electronic device or module, the SIM card may fail - after all, there is a chip installed inside it. If it breaks, the phone will not be able to register in the MegaFon network. The result will be a complete lack of communication - the antenna indicator will not indicate the presence of a network signal.

But it’s too early to get upset - even though the SIM card is out of order, you can always restore access to your phone number. To do this, you need to arm yourself with a passport and contact the nearest MegaFon service office. Here you will be given a duplicate SIM card, which you will need to install in your phone - now the mobile phone will be able to register on the network.

Before sending to the service office, make sure that your number is registered to you. Otherwise, the issuance of a duplicate will be refused.

No network in this area

Now you know what to do if the MegaFon SIM card does not work and there is no network - you need to contact the service office for a duplicate. At the same time, your number’s balance, tariff and service packages are fully preserved. Let's find out what to do if you arrive in any locality and find that there is no coverage of the MegaFon network. First, you should send the phone to reboot - it is quite possible that some kind of network error has occurred that is preventing the registration of the mobile phone.

If rebooting helps, that's good. But if the results are negative, you need to make sure that MegaFon has coverage in the area. In Russia there really is settlements, where a limited number of operators operate - for example, only MTS or only Beeline. It is quite possible that you were lucky enough to get to places where there is no MegaFon network.

There is only one way out of this situation - to purchase a SIM card from the operator that definitely works in the given area.

Now you know what to do if there is no MegaFon network - you need to check sequentially:

• Phone performance;
• SIM card performance;
• Availability of MegaFon in a particular area.

If you know for sure that there is a network here, but registration does not occur for some reason, you should go to the settings and perform a manual search - sometimes this helps if there is no network on MegaFon.

Rhythm modern life requires us to constantly be in touch with loved ones and colleagues, so the failure of the telephone can cause a number of problems. So, if the SIM card does not work, you will not be able to call anyone from your contact list, and this situation is one of the most common reasons for contacting a service center.

Phone SIM card malfunctions

If cellular telephone does not see the sim, then the problem lies either in the gadget itself or in the card. It is worth noting that SIM card technology was initially created for use in payment systems, so maximum attention was paid to the level of reliability of the element, and yet its failure is quite possible.

Some problems with a SIM card can be solved quite simply and unambiguously - if it has expired or is damaged, then the only solution is to contact the operator for a replacement. But more complex cases are also possible.

If the SIM card does not connect to the network

If the SIM card does not see the network, then first you need to make sure that you are within range of the mobile operator's signal. Then you need to find the reason for the malfunction of the mobile: for example, the SIM card may be blocked or damaged (this happens when it is used for a long time or is often moved to different devices). In order to check this, just insert a SIM card from another operator into the phone - if the cell phone “sees” it, then the problem lies in the SIM.

Next, you should check your cell phone settings and, if necessary, start an automatic network search, or try to find it in manual mode. Another reason for the malfunction could be the flashing of the device, which led to failures software. Also, the source of trouble may lie in unsuccessful pruning. standard card to be able to install it in a slot designed for micro- or nano-sim.

If the second SIM card does not work

Many modern mobile phones can support two SIM cards at once, which is very convenient. However, there are often situations when the phone does not see the second SIM card, while the first continues to work stably. In this situation, the problem may also be a malfunction of the sim; you can check this simply by swapping the cards. If the cell phone still cannot detect the SIM card, then you should contact the mobile operator’s office to find out the reason and, possibly, a replacement. If, after installing the SIM card in another slot, the phone found the network, then most likely the reason should be sought in the device itself.

SIM card does not work - reasons

It is quite simple to detect the source of the malfunction and understand why your smartphone does not see the SIM card. Among the main causes of malfunction it is worth highlighting:

• the card has moved out of place or does not fit well into the slot;
• the SIM and slot contacts must be cleaned of dirt;
• the phone is programmed to work only with a certain operator (this especially often happens with smartphones brought from abroad);
• software problems - such problems may appear after an unsuccessful installation of a new operating system or after flashing a cellular phone (in order to restore normal operation of the device, it is usually enough to return to the factory settings);
• damage to the SIM card slot - the cause of the breakdown may be too frequent reinstallation of cards, as well as the device falling, sudden temperature changes or water getting under the case, in this case only complete replacement element;
• antenna defects - the part may fail after various mechanical damages.

Please note that the phone does not always immediately respond to physical damage - for example, after a fall, the device may continue to work stably for some time, and only after a few days, or even weeks, the first signs of a malfunction may appear. Therefore, among the main recommendations of specialists is to contact a workshop immediately after damage.

The phone does not see the SIM card - what to do?

What to do if your phone does not see the SIM card? First of all, you need to make sure that the reason is not in the sim itself, since in this case only contacting the mobile operator will help. If you are sure that the card is working normally, then you should contact a specialized service center to identify and fix the problem. Its employees will conduct a complete diagnosis of the device, which will help quickly identify the cause of the malfunction.

Repairing a SIM card slot is a rather complex process; it requires special equipment and experience, so you should not try to fix the problem yourself. You can damage the parts of your smartphone, which will ultimately lead to the need for complex, time-consuming and expensive repairs. At the same time, an experienced specialist will be able to quickly restore the functionality of the gadget to its full extent.

This is a very common problem on devices running the Android platform.

In any case, it would be useful to understand what the reasons and solutions are. this phenomenon.

Banal reasons

Let's start, perhaps, with a number of the most banal reasons why Mobile Internet may not work.

Their list is as follows:

• Negative balance on the phone. To exclude this option, you should check how much money you have in your account. Depending on the operator, the method may differ.
  To find out how to check the account status on your phone, you should contact your operator. Most often, the SIM card has both a balance number and an operator number.

• The subscriber is outside the network coverage area. Another very simple and common reason. To rule out this option, you should look at the network indicator in your . An example of this can be seen in Figure 2.
  To fix this problem, there is only one way out - to go to a place where the device can pick up the signal normally. By the way, a weak network can cause the Internet to simply work very slowly.

Clue: If this indicator is always low, even if you walk the device close to a telephone tower, then the problem is not with the network, but with the device itself. Then you should just take it in for repairs.

• The “Data transfer” option is not enabled in the settings. All modern smartphones have this option. You can easily turn it off in the settings.
  True, depending on the specific smartphone model, the location of this item will be completely different. For example, in phones with a platform it can be found this way:
  • go to settings;
  • select “More...” (Figure 3.a);
  • go to the “Mobile network” menu (Figure 3.b);
  • check the box next to “Mobile data transfer” (Figure 3.c).

As mentioned above, in different operating systems this item will be located in different places, but its name will always be approximately the same.

• Automatic registration on the network did not occur after it had been absent for some time. This phenomenon can occur after a subscriber leaves the subway or simply returns from places where the Internet did not work.
  This is especially true for networks. In this case, there is also one and only way to fix everything and it is to restart your device, that is, turn it off and on again.
  Depending on the process, this process occurs differently, see the instructions.

Settings are wrong

To exclude this option, you should go to the Internet settings on your phone and find there items related to APN, that is, the access point.

Depending on the model, the location of this item may also differ, but APN will remain APN in any case.

To fix this problem, there are two ways:

1. Request settings from the operator.
2. Manually set up the network connection.

The easier option, of course, is the first option. To find out how to request such settings, you should contact your operator or go to your mobile operator's website.

Information on the most common of them can be seen in Table 1.

Table 1. Request numbers for obtaining Internet settings for the most popular mobile operators in Russia

As for other operators, you will need to call the operator and ask him how to get automatic settings Internet.

In most cases, the settings will be set automatically and the user will not even notice it.

Only at the end will he receive a message with something like this: “Congratulations! The Internet settings on your phone have been installed successfully."

It happens that you receive an SMS, when you read it, the “Install” button appears.

Accordingly, you need to click on it and the settings will be installed.

Manual network setup

With manual adjustment everything is somewhat more complicated. An example of finding access point settings on Android phones can be seen below.

Step 1. Go to settings, then select “More...”, which is shown in Figure No. 3.a, then select “Mobile network” (Figure No. 3.b).

Step 2. In the menu that opens, open the “Access Point (APN)” item, as shown in Figure No. 4.a.

Step 3. Click on the button to add a new access point. Usually it consists of a simple “+” sign, as shown in Figure 4.b.

Step 4. Fill in the fields “Name”, “APN”, “Username”, “Password”, which are highlighted in Figure No. 4.c.

As for the meanings of these fields, you should also find out about them from the operator; they are completely different for each network.

For the most popular operators, the values ​​of these fields can be seen in Table 2.

Table 2. Internet settings values ​​for the most popular operators in Russia

These menu items may be completely different depending on the phone. There are other reasons why the Internet does not work well or does not work at all.