Doesn't read sim card. Why the phone does not see the SIM card. Why is the SIM card not working?

A mobile phone is not able to function without a SIM card, this is a well-known postulate (with the exception of calling emergency services. Here one mobile phone is enough, without a SIM card). Moreover, as usual, sim stops working at the most inopportune moment, which your gadget will not fail to inform you about, asking you to insert it, although everything is in its place. And such situations happen not only with the old chip.

Before panicking and starting to call all kinds of MTS service departments and contact centers, it is worth conducting an initial surface inspection, eliminating problems that can be easily fixed by the subscriber on their own.

Sim could move and thereby lose contact with the gadget. You can take it out and insert it again, make sure that it has taken the necessary position and try to turn on the device again. In general, the rule “In any incomprehensible situation, turn off the phone and get a SIM card” always works flawlessly and cures most of the diseases of modern gadgets. If the problem was solved - great, if not - then we continue the research further. To avoid such problems, we advise you not to cut the chips yourself and not insert nano and micro SIM cards into a regular phone slot.

The contacts of the receiver and sim may be dirty at the points of contact which hinders their full interaction. Remove dirt, insert the card into place and try to start the machine. Try not to touch the chip with your fingers, you can wipe it with alcohol.

Eliminate the deformation of the sim, if its contact surface has become concave, then it can be bent a little in the opposite direction to return to its normal state, and try to see if it starts to work.

Insert sim into another device. If in this case it did not start functioning, then we can unambiguously conclude that the reason is in it. If another device recognizes the sim, then it's your device..

Blame the phone

It is necessary to find out the origin of the phone, since often they are “locked” under the equipment of a certain operator and they simply cannot recognize an alien SIM card.

In the case when two slots are provided in the gadget, a situation may arise that one is dominant and suppresses the work of the second, while the SIM card inserted into the second will not work.

The smartphone was damaged: it fell, it was exposed to moisture, experienced significant temperature changes. Liquid that gets inside the device can have a detrimental effect on the contacts, oxidizing them. You can solve the problem yourself by cleaning the docking points, but this may not bring the expected results. If you know for sure that the reason is precisely in the defect, then you cannot do without going to the service center. And in general, in cases with modern devices it is better not to climb into the slot.

What to do if the phone does not see the MTS SIM card: ways to solve the problem

To get started, you should call the MTS contact center. How to do this, you ask, because the SIM card does not work, which means that there is no way to make a call.

In fact, everything is simple. By number 8 800 250 0890 you can reach the call center operator both from a stationary phone and from the number of any other operator available to you at the moment. After the operator answers you, explain to him the essence of the problem, he will ask you a series of questions in order to fully understand what is the matter, and give recommendations on the next steps. Perhaps they can help you on the spot, if the card is blocked, they will tell you what to do to activate it, if possible.
If the card is faulty, then it will have to be replaced, this can be done at any nearest MTS office. It's completely free. In this case, the number, tariff, amount on the account will be saved. For replacement, you will need a passport and a statement from the owner.

The slot and the SIM card itself are one of the most vulnerable parts of a smartphone. Therefore, there are many reasons why a mobile device does not read a SIM card. Some of them are easy to fix, others can only be fixed by a professional. We offer to analyze the most popular options for why the phone does not see the SIM card. You will also find simple and proven tips on what to do if the mobile loses the network or does not connect to it at all.

In the article:

System crashes

Many factors undermine the stability of the operating system. Often they do not greatly affect the functionality, but periodically provoke failures, for example, in working with a SIM card. Usually, to fix errors of this kind, it is enough to follow simple steps:

Reboot your device. If you inserted a SIM card into a working device, it may not detect it until it is restarted. Hold down the power key, select "Restart" and wait for the device to turn on again.
Remove the battery and SIM card. Turn off the device, remove the battery (if possible) and the SIM card for 30 seconds or more. Upon completion of this procedure, place the components in place and turn on the mobile.
Toggle "Airplane Mode". This mode disables all mobile data communications. Some phones have access to the mode activation icon through quick settings in the notification shade. If you have it, then activate "Airplane Mode", wait 20-40 seconds and turn it off.

In the case when there is no icon in the "shutter", go to the "Settings - Network and Internet - Advanced" path. There is a flight mode control button.

Expired SIM card

If the card has not been used for a long time and the device does not see it, it means that the validity period of the number could have ended. Because of this, it becomes inactive. Go or call the operator to find out if the card has expired.

SIM card is locked for a specific operator

This problem is faced by people who bought a smartphone in Europe and in the USA. You could get a device designed for an American telecom operator. Unlocking the gadget is possible, but it is not cheap, and the success rate is not 100%. Because of this, often the iPhone does not see the SIM card.

You can unlock an Apple phone through an official contact with the company or with the help of R-sim, the price of which is more budgetary. Then you can insert Tele2 cards or other operators.

Dirt in the slot or on the SIM card chip

Both elements can get dirty over time. If dust has formed between the contacts or a foreign object has fallen, this will cause delays in recognizing the SIM card or it will turn off all the time. Always handle these parts very carefully, wipe them down if possible.

If the gadget does not catch the network, try the following:

remove the card holder;
visually inspect them for dirt and damage;
shine a flashlight into the nest, make sure that there is nothing superfluous there, blow it out;
wipe the tray and SIM card so that the golden chip is perfectly clean;
insert the card back into the device and start it.

Often this simple operation helps to revive the old SIM cards of Beeline and other operators, after which the gadget can see them again.

Broken SIM card or tray

As already noted, these are fragile and small parts that can be accidentally damaged. For example, getting them into water, falling, inaccurate removal or rough installation into the socket may well lead to microcracks or breakage of contacts. If this happened to the card, it can be replaced at the cellular department.

If the tray or connector where it is inserted has become unusable, then nothing can be done on your own, you will have to contact the repair center, where they will tell you why the phone does not see the SIM card.

But before you do that, inspect the details:

Follow the first four points from the previous instructions.
Install the card in another smartphone, check if the connection works on it.
Insert the card into the slot, make sure it fits snugly.
If the SIM card falls out, carefully place a piece of paper or simply replace it with a new one.
It remains to insert the card and start the device.

Attention! If you cut the card yourself to make it smaller to fit the new standard, you could damage it. In this case, it is better to contact the salon to get a new SIM card. From now on, do not try to cut it yourself, so that later you do not think why the phone does not see the SIM card.

Lost connection settings

Sometimes on Android, these settings spontaneously change or crash after the firmware. This often results in loss of communication. To fix the problem, do the following:

Follow the path "Settings - System" - Advanced - Reset settings".
Click on "Reset Wi-Fi, Mobile Internet and Bluetooth Settings".
Confirm the operation.

The system was attacked by a virus

Viral applications can affect many aspects of Android operation, including network reception. To avoid them getting into the OC, do not open suspicious links, letters, banners, and do not install dubious software.

You need to find out if the phone is not reading the SIM card because of malware. First, put the gadget into safe mode, which deactivates third-party software. To do this, do the following:

Press and hold the Power key.
Hold "Power off" for a few seconds.
The smartphone will offer a transition to safe mode, agree.

See if the card is recognized. If yes, then it's time to look for hacker software, due to which the phone stopped seeing the SIM card.

To do this, do the following:

Go to Apps & Notifications.
Tap on "Show all apps".
Select "Installed apps" at the top.
Look through the list of programs, look for suspicious software with strange names or software that you definitely did not install.
Remove the virus and restart your smartphone, the MTS network, Tele2, etc. should appear.

Alternatively, you can install Kaspersky Anti-Virus and scan the system. You can download it from the Play Store.

Global failures in the operating system

The operating system may stop working correctly due to such a reason as an unsuccessful software update or the installation of an unofficial firmware that has communication bugs. If you are using a custom build, go back to stock.

Check for available updates. If a communication bug is widespread, the vendor will quickly release an update. If the failure occurred as a result of errors during the update and the new build did not fix it, do a factory reset. Then, probably, the device will recognize the SIM card.

Open the device settings "System - Advanced" - Reset settings - Delete all data.
Read the warning again and start the process.
When downloading, you need to reconnect your account and restore the data.

Attention! Hard Reset will erase all data from the device (apps, photos, videos, accounts, etc.), so back up your data.

If the mobile phone fell into the water, fell and was damaged, or the connection stopped working after other damage and the manual did not help, contact the repair center to have a professional diagnose the device, find out why it does not recognize SIM cards and repair the contacts or tray, if necessary.

The phone does not see the SIM card? This is one of the most common problems that everyone has encountered. This misfortune always happens unexpectedly, and, despite its apparent evidence, there can be many reasons - as well as solutions.

It happens that the phone simply refuses to see the map. Sometimes the SIM gets stuck in roaming mode, which makes it impossible to make calls. Let's figure it out, it's in the phone itself or the card. If this is the first option, then it will be possible to avoid running around to the operator's salon. You can decide for yourself, poking around in the system menus and trying to figure out all the intricacies of Android.

System or software malfunctions

Often it all starts after reinstalling the operating system. If there is any suspicion, it is better to install the OS again, as well as restore the factory settings.

Android updates and installation failures lead to serious crashes. Often the user has to carry the device for repair.

Switching on the SIM card

Do not rush to blame the smartphone for all the troubles. Much more often, the cause of the malfunction is obvious - something with the SIM card. SIM may refuse to activate for various reasons:

Dirty contacts. The first thing to do, if there are no signs of physical damage, is to gently wipe the contacts with alcohol.
The holder is broken. If you have a brand new device, you are in luck: you can inspect the SIM card holder yourself. But almost all modern gadgets are deprived of such an opportunity - if all methods fail, you will have to send it in for repair.
The card is “missing” because the phone is “locked”, that is, modified to work with a single carrier company. Such phones can be “hit” if you buy them from your hands or cheaply from abroad, where the practice of limiting the choice of telecom operators is the norm.

Problems with NVRAM

If you are lucky enough to become the owner of a device with an MTK processor, you risk catching a characteristic NVRAM error. NVRAM stores IMEI - international mobile equipment identifier, a unique device number. If something with NVRAM, then IMEI also cried.

For diagnostics, open the dialer application and dial "*06#". If IMEI is not displayed, it becomes clear that NVRAM is junk.

The message "NVRAM WARNING: Err = 0x10" when connected to the Internet also indicates this malfunction. It is possible to solve the breakdown of NVRAM by your own means.

SIM issues after update

Updates are an unpleasant process. Because of the hesitation, both minor failures and complete inoperability of the device can occur. If the trouble started because of the OS, try reinstalling / restoring the factory settings. Insert, but still does not work? You'll have to turn to the experts.

Phone problems

It is difficult to say which is worse - when there are difficulties with the phone or with the card itself. Depends on how you prefer to solve the difficulties that have arisen. What can happen to a mobile phone:

junk holder;
it is locked;
NVRAM problems;
dirty contacts;
water has entered the slot/physical damage has occurred.

As a rule, the master will be able to fix the problems of the phone itself. You better not understand.

SIM card and phone incompatibility

Cell phone not accepting sim card? It can be locked, which is why all the SIM cards of a "foreign" operator are not accepted. It is possible that the card format is unfamiliar to the phone slot. There are such types of cards:

Mini-SIM;
Micro-SIM;
Nano SIM.

Often a fresh phone refuses to understand an old-fashioned card, and it must either be replaced or cut off. Check the documentation to understand which card is right for your device.

The problem with the contacts of the slot and SIM card

Very often, everything is solved very simply. If the card has been in use for a long time, then its contacts could become dirty. Wipe with alcohol and try again.

If the reason is related to the smartphone, then it is more difficult to figure it out. Modern phones are very monolithic, without free access to the card slot, as it used to be. To check the contacts, you will have to disassemble the mobile, which is fraught with even greater complications. It is better to have the diagnostics in the repair center.

Wrong Firmware: Consequences and Troubleshooting

If there is a malfunction in the software, pay attention to the firmware. You may have tried to install custom firmware on your own, which caused something to go wrong during the update.

The phone does not see the SIM card of operators, such as:

Megaphone;
Beeline;
Tele 2;
Yota.

Regardless of which operator you have, the solutions are the same. Let's highlight the main reasons if the card refuses to be detected:

Expiration date has expired

Often a Sim simply dies of old age. It happens that there are no external signs of “age”, and the card simply crumbles. To get a new one, you have to go to the operator's salon. If you are in Russia, do not forget to take your passport.

The operator blocked the card

If you leave the card for a long time, it will be blocked by the operator. Contact him and ask what to do for resuscitation.

Water/Physical Damage

If water gets on the card, it will deteriorate. With the constant pulling out of the SIM card from the phones, wear and tear can happen - you have to change it.

Unsuccessful pruning

Bought a new smartphone that does not support the old SIM card? You'll have to reduce it. But this is a delicate process, and if you mess up, you can lose your card. Operators offer circumcision services, but they cost money. If the SIM was damaged, you will have to demand a new one.

Damaged phone contacts

If the SIM slot has been damaged, look for a master.

Locked phone

Bought a super-cheap phone from abroad, but he does not see the network? It was probably stitched specifically for one operator. Often you can get on such a device by buying it from your hands. In Russia, getting on such smartphones is not easy, but still possible. It is possible to unlock; the process is risky - it is better to trust the masters.

Why the second SIM does not work in the phone

Smartphones with dual SIM support have ceased to seem rare and have become the norm. One card works and the other doesn't? It's okay: sometimes the solution is simple.

Why the second SIM card may not work:

It is not activated. Some mobile models offer to disable card slots. Find in the settings "Manage SIM cards and enable the desired slot"
The map is in flight mode. Try to do something from the map - send a message. It might activate it.
Your card has been blocked. Contact the operator and he will tell you
Because of the two radio modules, IMEI flies. You can fix it by flashing it - the service center will help.

So, today we will talk with you about the situation when the phone does not see the SIM card. Why is this happening? What should be done in this situation? To whom and where to contact? Is it worth it to panic? All this will now be discussed. In addition, we will try to find out why problems with SIM cards and mobile phones have become acute and frequent today. Let's quickly start with you to study our today's question.

Correct position

Well, the first reason why the phone does not see the SIM card is its incorrect position in the slot. In truth, this problem is not particularly common now. However, on some phone models, the slot holds the card in place by very clever methods. And in cases where something is done wrong, you will have problems with "reading the SIM".

To correct the situation and resolve the issue, simply disassemble your gadget and then check the position of the SIM card. If something is done incorrectly, then it is best to remove the card and insert it again. By the way, the side with the chip will have to be placed down, that is, in relation to us - color. That's all.

Now reassemble the phone and see what happens. Sometimes everything is fixed, and problems do not arise in the future. But it also happens that the phone does not see the SIM card, even if it is correctly located in the slot. What to do in such a situation? Let's try to understand this difficult question. After all, there are still a lot of possible scenarios for the development of events.

Breakdowns and interference

Well, if you are wondering why the phone does not see the SIM card, then keep in mind: it may also happen that you simply have some kind of garbage or dirt in the slot. And for this reason, your card cannot be fully read. As a rule, in this situation, everything seems to be normal, but nevertheless, the signal disappears from time to time. Not very nice, right?

In this case, to be honest, fixing everything is very, very simple. It is enough to carefully clean the SIM card slot, and then insert the card back into it. Turn on your gadget and see what happens. Very often this move works without any problems.

Things are much more complicated when the phone does not see the SIM card, you don’t know what to do, and even there are suspicions of damage (breakage) of the slot. In this case, it makes sense to take your device in for repair. They will help you find the cause of the failures, and they will also tell you if the situation can be corrected.

In general, in such situations, it is much easier to buy a new phone. After all, a repaired slot, as a rule, does not work very long and with high quality. But do not immediately run and choose a new gadget. After all, the phone does not see the SIM card, not only because of dirt, dust and breakdowns. Let's see what else could be the reasons for this kind of behavior. There are still quite a few of them.

Sim card malfunction

For example, a malfunction of your card may be the culprit. It is at these moments that users think about why the phone does not see the SIM card, and also try to solve the problem by all possible methods.

If you have another SIM card at hand, then insert it into the phone slot and see if everything is in order. Yes? Then the problem is really a malfunction of the card. It needs to be changed. Fortunately, modern mobile operators allow you to implement this venture without changing the number, as well as without losing personal contacts. To do this, however, you will have to walk to the nearest cellular office of your network, then draw up a special application there and wait for a while. That's it - problem solved. But don't be so quick to rejoice. After all, sometimes it's not the SIM card at all. And in what? Let's try to understand why the phone stopped seeing the SIM card. There are plenty of reasons for this behavior. And for each problem there is its own, fairly simple way to solve it. Let's quickly get to know them.

Two cards

A very interesting problem that has become widespread in recent years is the impossibility of working simultaneously with two SIM cards. That is, 2-SIM gadget models are the most common objects that we have to suffer with.

For what specific reasons the phone does not see the SIM card in such cases, as a rule, it is difficult to determine. It could be operator incompatibility or the most common system failure. However, the problem needs to be addressed. How? Usually, users simply take out a SIM card that we don't need and use only one number. In extreme cases, insert it into another gadget. That's all.

But there is another situation in which the phone does not see the SIM card. What to do if the source of the problem is not 2 SIM cards? Let's try to understand this not so simple moment.

Fake

In modern markets and in stores, more and more often they began to sell fake phone models. It is for this reason that buyers began to notice the occurrence of big problems with their gadgets. So, if the Samsung phone does not see the SIM card (or any other model), then it makes sense to check it for authenticity. In most cases, you will find that in front of you is a real fake.

How to act in this case? First, go to the store where you bought the gadget. Provide the receipt and all proof of purchase, and then report the counterfeit. Say that you would like to replace the gadget. You must make a replacement as soon as possible. But in reality, things are a little different.

Few people will agree to exchange the sold goods just like that. Even fake. Sometimes you have to go to court in order to satisfy your desires legally. Nevertheless, sometimes it is enough to intimidate employees with a court. Try to do it. If all else fails, then you should go to court with a lawsuit. Thus, if the phone does not see the SIM card, then it may turn out that you will have to work hard to restore justice.

Conclusion

So, today we have learned with you about the possible causes of problems with SIM cards on phones. As you can see, there are quite a few of them. Moreover, some of them require a complete replacement of the gadget, and some - even going to court.

By and large, if your phone has suddenly and for no reason stopped seeing the SIM card, then it would be better to take it for repair. Now specialized services are literally everywhere and everywhere. Only there you will quickly be helped to correct the situation in such a way as to minimize all risks.

A SIM card is a necessary part of any cell phone. Without a SIM card, as we call it in a modern way, it is impossible to send and receive messages and calls. Unfortunately, no one is immune from the situation when the 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 trouble, asking you to insert a SIM card, although it is already inside.

Action plan:

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

Open the phone, inspect the SIM card, evaluate its location in the slot. Perhaps the SIM 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 nearby, then it is likely that the contacts of the SIM receiver and the SIM card simply do not touch. Try pressing the SIM into the slot with a small sheet of paper folded several times. Place the folded sheet between the SIM card and the battery and reassemble the phone. Perhaps the contact between the parts will be restored, and the SIM card will start working again.
Carefully inspect the contacts of the SIM receiver and SIM card. Are they contaminated? They may be the reason why sim card stopped working. Wipe visible contacts with an ordinary eraser, return the SIM card to its place and assemble the phone. Works?
Bend the SIM card slightly so that the side with the contacts is convex. With prolonged use, the SIM card heats up and deforms, and then the SIM contacts do not reach the slot.
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 in your SIM card: it is faulty. If the phone does not see the new SIM card either, then the problem is still in it.

Why did it happen so?

In a conflict between a SIM card and a 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.

For cell phones with two SIM cards, it often happens that sim card slot not working during the work of the second. Therefore, when examining the phone, you should insert the “doubtful” SIM card into both the first and second slots.

Some physical damage can be detrimental to the operation of the phone. 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 the junction of the loops responsible for the communication module with a napkin. If, after cleaning, the SIM did not work, then you will have to carry the phone to the service center and repent there that you overlooked your little friend.

Please note that the phone does not immediately respond to physical damage such as drops or water ingress. For a while it works as usual, but later it breaks. Therefore, if you have a phone in your hands that does not see a SIM card, try to remember if your friend had a chance to endure any trouble. Even a sudden change in temperature is detrimental to the operation of the 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 the sim is to blame

Some SIM cards have an expiration date. If the SIM card is not used for a long time, it is blocked and turns into a useless plate. Also, a SIM card can be blocked due to a negative balance. Each operator has its own rules, and you need to know them.

Some mobile operators allow the activation of a SIM card only after the first paid action. As a rule, when buying a SIM card, you are informed about its correct activation.
In many modern touchscreen phones, not a full-sized, but a cropped SIM card works. Sometimes owners of iPhones and other mobile devices cut the SIM card on their own, and then find that cut sim card not working. Perhaps the reason lies in the wrong pruning, so this process is best left to specialists in service centers. But first, if you mini sim not working, inspect it for dirt, restart the phone. The same inspection should be carried out if micro sim not working. After all, there is hope that you can solve the problem yourself.

Contacting operators

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