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Why does the SIM card in my phone get cut off from time to time? Mechanical damage to a mobile device and how to eliminate it. SIM card "Megafon" does not work: only emergency call

Almost every user of mobile gadgets has encountered a situation where a smartphone “does not see” the SIM card. In such a situation, there is no need to panic and rush into all seriousness, in the sense of dragging the phone to the nearest service center. The cause of the malfunction may turn out to be insignificant, and contacting certified specialists in this case will only empty your pocket of a certain amount of money.

Reasons why the phone does not see the SIM card

After reading the material presented below, you can get an answer to the question “why doesn’t the phone see the SIM card?” The main reasons for this behavior of a mobile device are given and options for getting out of this situation are given.

It is important to know

All SIM card detection errors are divided into two large categories: software and hardware.

Most often, an Android phone does not see the SIM card due to software errors. The most common of them are presented below.

SIM card disabled in operating system settings

SIM card can be simply disabled in the smartphone settings. This situation sometimes happens when buying a new mobile device. To enable SIM, you need to do the following simple manipulations:


note

If the card is activated, but the gadget still does not see it, you can try to perform some action with it (for example, send a short text message). Sometimes this method helps to get the SIM to work.

Airplane mode activated

Is it useful to have two SIM cards in a smartphone?

If the flight mode (or “On an airplane”) is turned on, the communication module is automatically deactivated and the Android smartphone does not see the SIM card, as it becomes inaccessible. If this operating mode is accidentally enabled, it can be deactivated by following these steps:


Problems related to system updates

From time to time (infrequently, but this still happens sometimes) problems arise with the operation of the mobile device after the next update of the Android operating system. In this case, there are two options to solve the problem:

  • Roll back the software to the previous version of the system firmware.
  • Wait for the next version to be released, in which this “bug” will be fixed.

Consequences of flashing the device with new software

If the Android device does not see the SIM card after the user, then to correct the error it is recommended to return to using the old software modification or repeat the process again.

Removed IMEI serial number

Each smartphone has a unique IMEI number, by which it is uniquely identified. There are cases when, after some user action (firmware update, resetting the smartphone to factory settings), this number is deleted from a special section of the smartphone’s memory, which makes it impossible to identify the inserted SIM card.

note

You can check the presence or absence of IMEI by typing *06# on your smartphone keyboard. If the system does not give any number, then the IMEI is missing.


To return the device to a working state, it is necessary in the phone. There are plenty of instructions on how to do this on the Internet. Myself the process is quite complicated for the average user, Therefore, if you have the slightest uncertainty in your own abilities, it is better to contact qualified service center specialists.

General failure of the mobile operating system

If the operating system slows down and works unstable, while periodically “losing” the SIM card, then The best way out of this situation would be to reset your smartphone settings to . The procedure in this case is as follows:


note

The above menu item names may vary for devices from different manufacturers.

Hardware problems when detecting a SIM card

So, with software errors in SIM detection, everything is more or less clear. Now let’s figure out what to do if your Android phone does not see the SIM card due to malfunctions in the device’s hardware. List of the main possible problems with smartphone hardware and options for solving problems with it are presented below.

If you suddenly notice that the Megafon SIM card does not work in your phone, do not get upset ahead of time. A problem can have several causes - and it can be solved in almost every case. Just remain calm, do what the instructions tell you to do, and the ringing function will be restored.

The performance of a SIM card is influenced by 6 main factors.

  • Technical malfunction. The most obvious, but not very common reason. The devices, the slot, or the module itself may be faulty.
  • Incorrect network settings. Most phones receive settings automatically, which leaves little risk of errors.
  • Lack of stable signal. In this case, the phone sees the SIM card, but it is impossible to use it. The solution to the issue is simple - go to a place where the connection is fully functioning.
  • Insufficient funds. The module finds the device, all the bars in the antenna indicator are in place, but you still can’t make calls or access the Internet. The reason for such troubles lies in the negative balance.
  • You have left MegaFon's coverage area. The company does not cooperate with some operators; the usual services are not always available in roaming.
  • Just bought a SIM card. It takes time for the module to register on the network. Just wait and everything will work out.

If none of the answers to the question “why doesn’t the Megafon SIM card work in the phone?” does not suit your case, contact the company’s offices. Our specialists will help you figure out the problem or offer to replace the product.

How to find out if the Megafon SIM card is working

First you need to exclude the most obvious. Go to a place with a stable signal and move the module to a working device. A working SIM card will register on the network and provide access to familiar functions. If this does not happen, replace the module.

The Megafon SIM card in the phone does not work: what to do?

As soon as you discover that the SIM card does not work in your phone, Megafon suggests following the 5-step instructions.

  1. Check the amount of money in your account. If the balance is negative, cover the debt so that the amount of funds necessary to complete transactions remains in the account.
  2. Look at the signal strength indicator. Missing - try changing location.
  3. Go to your mobile settings. Look at the network parameters, select from the available MegaFon networks, change the standard if possible - from 4G to 2G or 3G and vice versa - and reboot the device. If it still doesn't work, repeat the action with a different standard.
  4. Remove the module from the smartphone. Inspect the SIM card for damage or dirt. Wipe with a dry natural cloth or regular eraser. Insert back.
  5. Change the position of the module. It may be inserted incorrectly or the contacts are coming off. In the latter case, you should try pressing the card against the phone or bending it slightly so that the contacts touch.
  6. Insert a module from another operator into your device. At the time of the operation, MegaFon may have communication problems. Someone else's SIM card will determine if there is a problem with the phone.

The new Megafon SIM card does not work

The newly purchased, new module is inactive. The SIM card starts working on average within 24 hours after purchase, but in some cases the wait may take up to 3 days. If after some time the services are still unavailable, you can sound the alarm. Contact the company, specialists will be able to help, or try to activate the card yourself.

They do this in 3 ways:

  • On your phone keyboard, enter the command consisting of *121*PUK code*non-activated phone number#. Press call. The command can be sent from another cell phone, the main thing is to indicate the code and number.
  • Go to the MegaFon website. Find your personal account in the upper right corner and log in with your new number. As soon as you register and confirm ownership of the contract, the module will be activated.
  • Contact Support. Call 0500 or 8 800 550-05-00, wait for a response from a specialist and express your desire to activate the SIM card. Please note that at the call center the subscriber is asked to confirm his identity by providing his passport details.
  • Visit the offline office. Return to where you purchased the module, or go to the nearest operator's branch. Don't forget to take your passport, it will be required during activation. Eckeuf is free.

SIM card "Megafon" does not work: only emergency call

Do you think that the Megafon SIM card has stopped working in your phone, since only emergency calls are available? Pay attention to whether the device sees the module. This can be done using the inscriptions on the screen. If you notice something like “No SIM card,” then you should remove the module and try to insert it again after cleaning and checking the contacts.

Inscriptions in the spirit of MegaFon or “Operator-2” say one thing: the SIM card is working, the phone sees it, but the coverage does not allow making calls to other subscribers. Change your location. The ability to make a call may not be possible even in familiar territory when there is interference from thick walls or buildings in dense buildings.

If communication problems constantly arise, go to your personal account and chat with a specialist. You will be asked to provide an address where only emergency calls are available and to describe the conditions in as much detail as possible. On Android smartphones, information about uneven coverage can be sent automatically by installing the My Network application.

Providing mobile communications and Internet services requires the installation of a special SIM card in your phone, tablet or USB modem. This chip acts as a subscriber identifier and contains all the necessary information about a specific personal account, service operator and a number of system data. If a client’s MTS SIM card does not work, he cannot make calls or access the World Wide Web. The problem creates a lot of inconvenience, which makes it necessary to find ways to quickly eliminate it.

In this material we will look at:

  • the main reasons why the SIM card does not work;
  • common types of errors and ways to eliminate them;
  • ways to contact a qualified customer service representative;
  • what to do if an error appears on the screen indicating that the SIM is not working correctly;
  • prompt fault diagnosis and additional precautions.

Considering why the MTS SIM card does not work on the phone, you can identify an extended range of problems associated with technical and software malfunctions. Diagnosing the problem is not difficult - a description of the error is displayed on the screen of your phone.

If you have not used communication services for a long time, and after that it stops working, such a SIM may be invalid. In case of prolonged inactivity on a number, the operator has the right to transfer it to unused status and transfer it to a new subscriber for reconnection. It is recommended to periodically perform USSD requests, top up your balance and call from the number you are using, so you can maintain the ability to use the services of the largest telecommunications operator.

Causes

As mentioned earlier, if a client’s MTS SIM card does not work, this may be due to both technical problems and software issues. This issue requires additional consideration of each specific case, which will help identify not only the causes of the malfunction, but also its prevention.

The SIM in the phone does not work

A common example of chip failure is a self-cut SIM. The evolution of smartphones was accompanied by a reduction in the size of the communication chip. The SIM replacement procedure is free of charge and can be performed at any operator service office. Some customers try to cut the card to the required size themselves and touch the chip itself, which makes it inoperable.

The new MTS SIM card does not work

If, after installing a new SIM in your phone, you are faced with the inability to use communication services, the reason may lie in:

  1. restrictions imposed on the phone. If you purchased your smartphone from a third-party telecommunications operator, it may be locked. In this case, you will only be able to use the services of such an operator. There are some ways to remove such restrictions, which you can find on the relevant resources;
  2. technical problems with a specific device. MTS specialists first check the functioning of each chip sold, which indicates problems on the user’s side. It is recommended to contact a service center where diagnostics will be performed.

No network

If the message “No network” is displayed on the screen, it means that your phone cannot connect to the nearest TV tower and is not in the operator’s service area. You should first familiarize yourself with the coverage area; this can be done in the corresponding section of the operator’s official website. There is also a problem with the malfunction of some technical components of the device. In this case, you will also need to contact the service.

Emergency calls only

If only “Emergency calls” are available to the client, the subscriber’s device may be blocked. The main reason is the continued presence of a negative balance on the personal account balance. You can check the current balance of funds and receive a detailed financial statement using the operator’s personal account. Having topped up your account with the required amount, you will be able to start working fully with communication services.

Invalid SIM card

If your SIM card is not valid, then the previously purchased number is no longer in service. In this case, the problem will not be resolved. The only solution to the problem is to conclude a new service agreement, after which you will receive a new SIM.

What to do if the MTS SIM card does not work

If, when considering the question “MTS SIM card does not work, what should I do?” The above information did not help, it is recommended to directly contact qualified technical support specialists of the operator. An appeal can be submitted:

  • by free call to the hotline support number. The client will be required to provide some personal data to verify the subscriber status;
  • directly visit the nearest service office in your city, where you can conclude an agreement for the provision of communication services;
  • by filling out the text form on the company’s official website. Please provide in advance a detailed description of the error that occurred and the measures already taken to eliminate it, which will speed up the time it takes to process the request and receive a qualified response.

A SIM card is a necessary part of any cell phone. Without a SIM card, as we call it in modern times, it is impossible to send and receive messages and calls. Unfortunately, no one is immune from a situation where a SIM card suddenly stops working. Or, for some reason the new SIM card refuses to be friends with the phone. The phone immediately reports this problem, asking you to insert a SIM card, although it is already inside.

Action plan:

What to do in such a situation? How to find out, why is the sim card not working?? Below is a detailed action plan.

  1. Open the phone, inspect the SIM card, evaluate its location in the slot. Perhaps the SIM card has moved slightly, so its contact with the phone is lost. If in your phone the SIM card needs to be inserted under the battery, and not into the card reader next to it, then there is a high probability that the contacts of the SIM receiver and the SIM card simply do not touch. Try pressing the SIM card to the slot using a small sheet of paper folded several times. Place the folded sheet between the SIM card and the battery and reassemble the phone. Perhaps contact between the parts will be restored and the SIM card will start working again.
  2. Carefully inspect the contacts of the SIM receiver and SIM card. Are they dirty? They may be the reason why SIM card stopped working. Wipe the visible contacts with a regular eraser, return the SIM card to its place and reassemble the phone. Works?
  3. Bend the SIM card slightly so that the side with the contacts is convex. With prolonged use, the SIM card heats up and becomes deformed, and then the SIM card contacts do not reach the slot.
  4. Insert another SIM card into your phone. The best option would be a SIM card from another operator. If it works, then the problem is with your SIM card: it is faulty. If the phone does not see the new SIM card, it means that the problem lies with it.

Why did it happen so?

In a conflict between the SIM card and the phone, as a rule, one of them is to blame.

If the phone is to blame

  • Some phone models are “locked” for a specific operator, so such a phone simply will not see a “non-native” SIM card.
  • With cell phones with two SIM cards, it often happens that SIM card slot does not work when the second one is working. Therefore, when inspecting the phone, you should insert the “doubtful” SIM card into both the first and second slots.
  • Some physical damage can have a detrimental effect on the phone's performance. For example, if water gets on the device (it fell into a puddle, or it rained on it), over time the contact between the slot and the SIM card will be broken due to oxidation. You can try to solve this problem yourself: disassemble the phone and wipe with a napkin the joints of the cables responsible for the communication module. If even after cleaning the SIM card does not work, then you will have to take the phone to the service center and repent there that you didn’t look after your little friend.

Please note that the phone does not immediately respond to physical damage such as being dropped or exposed to water. It works as usual for a while, but later breaks down. Therefore, if you have a phone in your hands that does not see a SIM card, try to remember if your friend had to endure any troubles. Even a sudden change in temperature is detrimental to the operation of a SIM card. You bring your phone from a cold winter into a warm house, and moisture condenses inside the device. The solution here is simple: disassemble the phone, remove the SIM card and wipe it with a soft cloth.

If it's Sim's fault

  • Some SIM cards have an expiration date. If a SIM card is not used for a long time, it becomes blocked and turns into a useless plate. Also, the SIM card may be blocked due to a negative balance. Each operator has its own rules, and you need to know them.
  • Some mobile operators allow SIM card activation only after the first paid action. As a rule, when purchasing a SIM card, you are informed about its correct activation.
  • Many modern touchscreen phones use a cropped SIM card rather than a full-size one. Sometimes owners of iPhones and other mobile devices cut the SIM card on their own, and then discover that cut SIM card does not work. Perhaps the reason lies in improper pruning, so it is better to entrust this process to specialists in service centers. But first, if you mini sim card not working, inspect it for contamination, restart the phone. The same inspection should be carried out if micro sim card not working. After all, there remains hope that you can solve the problem yourself.

We contact operators

Each mobile operator is interested in the loyalty of its customers, so in almost all cities there are service centers where you can contact with your problem.


Everyone is used to using the functions of a gadget to their full potential and it becomes unpleasant when something in it stops working normally. Let's say The phone does not recognize the SIM card, and that’s all, he is limited in his ability to call, write and use the Internet. The main thing in the situation is not to panic, but to find the cause of the problem in order to fix it faster.

It is possible that the iPhone does not see the SIM card due to airplane mode being turned on. This function is built into the phone by default; when activated, communications are disabled, as well as the Internet, Bluetooth and Wi-Fi. Airplane mode can be turned on accidentally, so you need to check. We turn off the function in the curtain that drops down from above, and reinstall the SIM card to connect between the card and the gadget.

Android does not see the SIM card due to incorrect settings

It happens that after purchasing a new gadget, the phone does not detect the SIM card. It’s just that the card slot is not activated in the settings; to do this you need to go to the SIM card manager and turn on the card. If there are two cards on the phone, and the phone does not see the second SIM card either, we do the same steps for this card.

What to do if the SIM card is enabled in the settings, but the phone still does not detect it. We do the following:

  1. Open the message and write an SMS (of any content).
  2. We send it, no matter to whom (sending must be done from a non-working card).
  3. The system itself will ask you to activate the SIM card.
  4. You must confirm the activation and everything is ready (the message will not be sent).

The smartphone does not see the SIM card due to damage

If you use a SIM card for a long time, it can become damaged and as a result the phone does not detect it. To check whether the problem is really with the SIM card, insert it into any other phone and check whether it works or not.

If the card does not work, you need to go to the service center of the card operator and change it to a new SIM card, while leaving the phone number the same. Replacing a SIM card is quick; the service will be paid or not depends on the card operator.

The reason is the wrong IMEI

Each gadget has its own IMEI code, without which you cannot make calls. To check it, enter: *#06#, it will appear here. We check the correctness; if an error occurs, you should set the code located on the smartphone packaging.

We configure it manually as follows:

  1. Let's see, have it under the battery, in the instructions or on the box. If the phone uses two SIM cards, then two numbers are written there. Pull out the SIM card.
  2. Enter *#3646633# and press the handset, after which the engineering menu should appear.
  3. Find and go to “CDS Information”, then “Radio Information” and open “Phone 1”.
  4. Enter space + into the AT command line and write EGMR = 1.7, “IMEI”.
  5. To confirm, click “SEND AT COMMAND”.
  6. We do the same for the second SIM card.

To check the changes, enter *#06#.

Does not detect SIM card due to firmware or after update

The firmware may be of poor quality, so after updating the system, not all functions of the phone work. To fix this, we return the phone to its original settings to download high-quality firmware and update the gadget.

The problem when the SIM card is not detected after an update can be solved in two ways:

  • We reflash the gadget via a computer or laptop.

  • Reset the gadget to standard settings.

If you don’t know how to do this yourself, it’s better to take your phone for repair or read the feature article on our website.

The phone does not see the SIM card - other reasons

There are also a number of reasons why a SIM card is not detected, here are some of them:

  • water getting into the slot, this can happen during rain or if you accidentally drop the phone into water;
  • promotions on phones from mobile providers. The price of the phone is lower, but a certain operator (network) is imposed. In this case, the phone simply does not see SIM cards from other operators. We contact specialists, they will remove the blocking;
  • The contacts on the card itself or in the slot may rust, you need to rub it with an eraser;
  • The contacts do not touch each other well. Sometimes it helps to simply take out and put back the SIM card. In difficult cases, you will have to adjust the card's seat.

Here are most of the reasons and ways to solve them, which can help in 70-80% of cases. If you couldn’t figure out the situation yourself, you should contact a specialist; sometimes you can’t do without it.

If you still have questions on the topic “What to do if your smartphone does not see the SIM card?”, you can ask them in the comments


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