First of all, a telephone is a means of communication, and only then a multimedia player, a tool for surfing the Internet, a camera, etc. And if the smartphone does not accept SIM cards, its main function will not be available. Problems with SIM on Samsung Galaxy can arise for various reasons. Some of them can be eliminated on your own, while others require more professional intervention. Let's look at why Samsung doesn't see the SIM card, and what to do in a particular case.

Main causes of SIM card problems on Samsung phones

There are a lot of factors leading to the fact that the device does not see or cannot recognize the SIM card. However, all of them can be combined into three groups:

1. Mechanical malfunctions of the mobile device. They occur when a card is frequently removed/inserted into the SIM slot, the device is damaged as a result of a strong impact, or moisture penetrates under the case.
2. Problems related directly to the SIM card. May be due to the presence of scratches, chips and other mechanical defects on the printed circuit board, expiration of the SIM card or its blocking by the operator.
3. Malfunctions of the operating system or installed software. Samsung may not see the SIM card after it is disabled by software, due to the installation of unofficial firmware or by deleting the IMEI number.

Let's consider each of the possible options in more detail.

Mechanical damage to a mobile device and how to fix it

If problems arise with the operation of the SIM card, the first thing you need to remember is whether the phone was exposed to any external influences. So, if you dropped it, there is a possibility that the power amplifier, microcontroller, connector or other module may fail or become unsoldered. In such cases, it is better to contact a service center.

If there are no prerequisites for the Samsung to break down, try the following:

Troubleshooting SIM card problems

If you determine that the source of all the troubles is the SIM card itself, it is recommended to act in the following order:

Software malfunctions

If you are the owner of a dual-SIM Samsung and the SIM card is not visible in only one of the connectors, see if the second slot is enabled in the device settings. The required function is located in the “SIM Card Management” section.

There are cases when, after a smartphone is infected with a virus or its firmware is flashed on its own, NVRAM—non-volatile random access memory—is damaged. This is where the IMEI of the mobile device is stored. If you erase it, Samsung will not detect SIM cards.

To fix the problem, you will need to restore the IMEI. This can be done through the engineering menu:

After restarting the phone, the IMEI will be restored and everything should work. If this does not help get rid of the problem, all you have to do is reset all settings to factory settings or reflash your smartphone via a PC and the Samsung Kies program.

A SIM card is the key to unlocking the capabilities of a modern smartphone. After all, if it is not in the device, the user will not be able to send SMS, make a call to another subscriber, or access the Internet.

Unfortunately, sooner or later any SIM card begins to malfunction or even fails. The saddest thing is that no one is safe from such cases.

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The user's first actions when a problem occurs

The first thing you need to clarify is that in most cases, the smartphone does not see the SIM card if the slot where it is inserted has been damaged, or if the card itself has been damaged.

Also, when an Android smartphone supports working with two SIM cards at once, you first need to make sure that the desired SIM card has been activated in the settings. To do this you should:

1. Go to the “Settings” menu.
2. Find section here "SIM Card Management".
3. Find the one you need in the list of available SIM cards and activate it.

There are also cases when the SIM card is already activated, but for some reason does not show signs of life and does not show its work at all. In this case, try the following:

1. Go to the application to send SMS messages.
2. Try sending a message to any subscriber using a non-working SIM card.
3. The operating system should display a message indicating that you need to enable the SIM card.
4. Just activate it.

If none of the methods described above helped solve the problem, you can try several more methods, which will be described below.

Cleaning the SIM card from dust and moisture

In some cases, problems may arise with the contacts of the slot or SIM card. Most often this happens when the Android phone ends up in a too dusty place or gets wet.

If you encounter such a problem, then you need to:

1. Open the back cover of the phone and remove the battery.
2. Remove the SIM card from the slot and wipe its contacts with a cotton swab slightly moistened with alcohol.
3. Then a similar procedure must be carried out with the contacts of the device itself.

Important! Use only alcohol for cleaning. Do not wipe contacts with perfume as it contains oils that will form a film after the sealant has evaporated.

If rust is found on the contacts during inspection, you can use a simple eraser to clean them.

The contacts of the SIM card and the smartphone do not fit tightly enough to each other

It is very rare to encounter a problem due to which the contacts do not fit tightly enough to each other. Because of this, the Android smartphone does not see the SIM card. In this case you need:

1. First of all, try simply removing the SIM card and inserting it back.
2. If it is still not detected after this, you can try placing a small piece of paper under it so that it fits more tightly to the contacts.

Unfortunately, this option will definitely not help if there is a separate port in the device case for the SIM card.

Watch the video why problems with SIM card contacts often occur. The author explains in detail how to fix everything:

Problems on Asus smartphones

It’s strange, but Asus smartphones are often plagued by the problem of condensation on the SIM card contacts. This is most often observed in winter, after the phone gets into a warm room after walking along a frosty street.

In fact, this case is not fatal. If condensation occurs, it is recommended:

1. Pull out the SIM card.
2. Wipe its contacts using a dry, lint-free cloth.
3. Once the resulting liquid has been removed, the card can be reinserted.

If this does not help, you need to contact a service center.

Problem on HTC smartphones

In most cases, an Android smartphone from HTC may not detect a SIM card due to the firmware. The company currently releases multiple firmware versions for each device. As a rule, each subsequent version eliminates the bugs of the previous one. Including problems with SIM card detection.

Conclusion

If none of the tips described above helped, you should consider visiting the operator’s service center. If the SIM card turns out to be faulty, specialists will quickly replace it with a new one.

→ Problems with Sim and Flash cards

Samsung Galaxy S4 does not see SIM card?

Customers quite often come to our service center and describe the following problem: Samsung galaxy s4 does not find a SIM card or is not registered on the network. Let's figure out in what cases this happens.

Firstly, the problem may simply lie in the SIM card itself. Nowadays, it is not uncommon for mobile operators to issue faulty, defective SIM cards. You can check this yourself - insert another SIM card into your smartphone, for example, from a friend’s phone. If the problem disappears, your next step is to go to a mobile phone store to replace the card. Of course, smartphone repair is not needed here.

Secondly, due to careless handling of the SIM receiver (say, you try to insert a SIM card at the wrong end and at the same time try to close the receiver), it fails, breaks and the Samsung galaxy s4 does not see the SIM. It is necessary to replace the SIM receiver, because, as the practice of all service centers has shown, repairs and attempts to correct the SIM receiver do not give long-term results. Replacing a SIM socket with a cable - 850 RUR.

Thirdly, a completely unpleasant situation can happen - the Samsung galaxy s4 does not find the SIM card, and even does not read the memory card. What happened? The problem is in the common cable of the SIM and flash receiver. Perhaps it was damaged as a result of a fall or careless handling of cards, or perhaps water got into the device. In this case, only replacing the SIM and flash receiver along with the cable will help.

What if my Samsung Galaxy S4 doesn’t see the flash drive? .

If you insert a memory card, but it is not seen by the smartphone, by analogy with a SIM card, you can also identify a number of reasons for this: 1) the memory card itself is faulty; 2) the flash receiver is faulty (for the same reasons that we considered in the case of the SIM). The exact reasons for the breakdown of a SIM or flash receiver can only be determined after a complete diagnosis of the device, which is carried out free of charge in our center, regardless of whether further repairs will be made or you refuse it for some reason. All work and spare parts are covered by a company guarantee. Call and come to our service center and experienced service engineers will solve any problem with the operation of your device. Phone diagnostics 0 rub.

Do you want to quickly and efficiently restore the previous reliable functioning of your Samsung? Then do not delay in solving the problem, but immediately go to the specialists. Because the longer you use a cellular device with a problem, the more serious the damage will become! And the sooner you come to us, the cheaper the repair will be!

Why doesn't my Samsung phone recognize my SIM card?

If your cell phone Samsung does not see the SIM card, The following reasons can be assumed.

1. Perhaps your contact has oxidized.

2. The SIM reader could have failed.

3. The SIM card control chip could be damaged.

4. Various other internal components (microcircuits, boards, contacts) can become unusable due to mechanical and physical impact.

Thus, to the question, Why doesn't my Samsung phone recognize my SIM card?, the answer may be one of these options.

What can be done?

1. If the problem is in the SIM reader ( Samsung says insert SIM card), you can try to clean it, but you should be very careful not to damage the contacts.

2. If moisture gets into the mechanism, then Samsung does not detect SIM card, the device should be turned off immediately, the battery removed and allowed to dry.

But, in any case, to determine exactly what went wrong and why Samsung does not read SIM card, you will need to contact a workshop. After all, only professional diagnostics Samsung with the help of special equipment will be able to indicate the location and cause of the breakdown.

Example from life:

The girl dropped her phone into the water, after which the device began to display an error - Samsung does not accept SIM card. She delivered the phone to our service center. It’s just that our employees carried out diagnostics in front of her and found that the SIM reader was susceptible to breakdown. In a matter of hours we replaced this component. Our specialists also carried out preventive procedures after water ingress, since in the future this leads to the development of electrolytic processes. Upon completion, the technicians did a free quality control and issued a guarantee to the client not only for the new SIM reader, but for the entire device!

Therefore, if you want to receive prompt, professional repairs, contact us immediately! We will offer you all types of services.

At the same time, we use modern special equipment, which, with minimal intervention, allows us to perform in-depth diagnostics, as well as complex restorative procedures.

We work only with original parts Samsung. Since we are suppliers of components throughout Russia, the prices for our services are much lower.

After your first visit to our workshop, you will receive a VIP client card, which entitles you to a discount of 10 to 40%.

Discounts for regular customers!

We offer free diagnostics!

Conclusions:

So, if you have Samsung does not find the SIM card, Contact a specialist immediately! Using a cell phone when there are obvious failures in the system leads to a deterioration in the condition of the device. Therefore, as soon as we noticed deviations in work ( Samsung does not recognize the SIM card or Samsung loses SIM card) It is necessary to make a diagnosis as quickly as possible. After determining the cause of the breakdown, specialists will begin repairs. Therefore, you won’t have to part with your device for a long time! After our repair, your phone will work like new, thanks to original components. Diagnostics are provided free of charge! Prices for service services are an order of magnitude lower than in other workshops. All this quickly and efficiently! You shouldn't risk fixing your cell phone yourself when you should trust the professionals!

The best service conditions are only in our service!

A smartphone is a multifunctional device, but its main task is to transmit voice or visual information. Not games or the ability to take photos, and certainly not a calendar or voice recorder. The main thing is communication at a distance. By and large, the Samsung phone itself is a hardware tool that transforms the signal, but the SIM card is the main receiving and transmitting device. If Samsung does not see the SIM card, the device becomes unsuitable for its basic functions. Considering that they belong to the same line of phones, the Galaxy s2 and the next generations of Galaxy 3 and s4, respectively, have approximately equal predisposition to a similar problem.

In general, it is not high, but, unfortunately, even in the reliable GTS 5250 and Ace models, it does occur. The main reasons may be:

• Mechanical damage to small parts of the connector.
• The card was disabled by the operator for non-payment of tariffs or due to long-term non-use.
• The latch is loose or broken.
• The SIM card itself is damaged by a fall, pressure, or scratches.
• Damage to the SIM holder.
• Unprofessional fitting of the card for micro SIM.
• Software error.
• Plate contacts are dirty.
• The firmware is tailored for another operator (this happens when the phone is purchased second-hand).
• The SIM card slot is broken.

Each of the above reasons may explain why the phone stopped receiving calls.

What to do if your Samsung Galaxy smartphone does not see the SIM card

If your Samsung Galaxy does not see SIM card, a win-win option would be to take it to the UMT Service workshop in Kyiv for free diagnostics. If you live outside the capital or are too busy, you can try to figure it out on your own. First you need to narrow down the range of possible problems. As we know, problems with SIM cards can have two types of reasons:

• problems with the SIM card itself;
• hardware failures.

Keeping this information in mind, we check the SIM card on a 100% working device. If the SIM card also does not work on the tested phone, then this is the problem. Call your operator from a different number and find out if this misunderstanding is not his fault. Having heard a positive answer, you solve the question in a logical way - buy a new SIM card or unlock the existing one through the operator’s branch. If the operator denies the company's intervention, you should carefully review the status of the card.

When looking for breakdowns, you should understand that even if you find them, this will only be an example of careless handling. A broken SIM card cannot be repaired - only a replacement. The second case, when our Duos or single-SIM smartphone (hardware) fails us, will turn out to be more costly. After checking the functionality of the card on another phone and realizing that it works, remember if there have been any software changes recently. Sometimes after firmware or software update, similar cases occur. You can try returning the old version of the software and check the result. It didn’t help, which means the diagnosis should continue in the direction of the hardware.

Distinct distortions of small parts: contacts, latch, etc. may indicate a problem. If the problem is not clear, follow the original advice and go to the service center.

How to handle your Samsung phone to prevent damage

The same common sense principles apply to Samsung phones as they apply to any other brand of electronic devices. Do not throw the device, even on a soft sofa or pillow. Install proven software from reliable sources. Firmware upgrades and changes to system utilities should only be carried out at a reputable specialized center. Try to remove the card to change it to another phone as little as possible. If a failure does occur, do not repair it yourself, give the device into knowledgeable hands.

When choosing a service center, we recommend choosing UMT service to repair Samsung phones and smartphones from other manufacturers. Our technicians not only have years of experience in this field, but also have the latest equipment and tools needed for repairs and other maintenance services. Among the popular repair services we can identify: