The SIM card is not detected by the phone. The phone stopped seeing the SIM card - let's look at all the options


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 detailed plan actions.

  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 with a regular eraser visible contacts, 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 There will be a SIM card of another operator. If it works, then the problem is with your SIM card: it is faulty. If new sim-map The phone doesn’t see it, which means the problem is there after all.

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 may have a detrimental effect on 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 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 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.
  • In many modern touch phones It is not a full-size SIM card that works, but a cut-off SIM card. 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.

iPhone users often turn to technicians because the phone does not accept or does not see the SIM card. For devices of this popular brand this problem is very common. Perhaps, in pursuit of introducing the next innovation, developers systematically ignore what they consider to be minor shortcomings. In any case, users have to independently find ways to solve this problem. What to do? How to fix the problem yourself? Who should I turn to for professional help?

The reason that your iPhone does not see the SIM card can be anything, from system glitches to a burnt-out module on motherboard. But there is a list of the most common reasons, let's look at each of them in detail.

Drops, bumps, moisture

When a phone falls, even though there are no external chips or cracks, it is likely that there is internal damage. Sometimes the problem is localized in the SIM card slot. It can “move away” and the contacts will not touch the metal part of the SIM card. You can try to pull out the slot (you will need special key or use a paper clip), and then push it back into the groove. Sometimes rebooting the device helps. If the problem cannot be solved, you will have to contact an experienced repairman. mobile technology. If the cause is the device getting into a humid environment, then you will not be able to do it without a qualified technician.

Old SIM card

SIM cards, like any device, do not last forever. They can simply exhaust their resource and not contact the device. To make sure that the iPhone does not see the SIM card for this very banal reason, ask a colleague or friend to insert a work SIM card into your smartphone. If the network appears, you will have to contact your cellular provider to exchange the damaged SIM card. Often the iPhone does not read Sim if it is often reinstalled on different devices or simply removed frequently. This causes the contact tracks to deteriorate and, over time, to appear on them. deep scratches, placing good contact with board.

Firmware glitch

Independently establish what exactly the firmware or system errors influence what smart device does not recognize the card, it will be very difficult. But in the absence of other provoking factors, we try to update iOS to current version or return it before previous version via iTunes.

Card reader or antenna

If the phone says that there is no SIM card, then the reason may lie in the antenna or card reader. Most often, the card reader or the card itself is damaged during careless installation or removal. Some people use dangerous improvised means that can damage fragile parts of the device. The contact tabs may become bent or even break. You have to change such elements or install a completely new connector.

"Locked" SIM card

It may happen that you try to insert a SIM card of a certain operator into the iPhone 5 or any other device, but the phone is factory configured to work with a different network. Numbers from other mobile operators are not supported in this case. You can deal with this problem by contacting a good service center. Or do it yourself, but this is risky; it is very easy to ruin expensive electronics.

Universal instructions

If the iPhone refuses to see even a new SIM card or a message appears on the phone screen about an invalid SIM or a micro-SIM not inserted, try the following manipulations:

  1. It is necessary to check that the gadget works well in the area where the gadget is located. cellular the operator whose SIM card is inserted into the slot.
  2. Try updating your iPhone to the most current version of iOS.
  3. With help standard functionality iOS, put your phone in airplane mode. Then wait 10 seconds and turn off airplane mode.
  4. Execute reboot iPhone. To do this, press and hold the Sleep/Wake button until the slider appears on the screen. Slide it to turn off the device. detailed instructions in the picture below.
  5. Be sure to check if your operator's settings are updated. To do this, go to Settings, select General, and then click About This Device. If an update is required, a message will appear on the smartphone screen asking you to click “OK” or “Update”. Click “Update”, after a while we restart the device again, the communication error will most likely go away.
  6. Carefully remove the SIM card from the holder and slide it back into the slot. Inspect the gadget and make sure that the SIM slot is tightly closed. If you are using a SIM card holder from a different iPhone model or a completely different smartphone, then it may not fit.
  7. Try using a different SIM card. If you don’t have a backup option, then go to the communication store and ask the employees to provide a duty SIM card to check the device.
  8. If after all the manipulations the message about the absence of a SIM card does not disappear, then contact the service Apple support. The operator will tell you what to do in a situation where the iPhone no longer sees the SIM card.

Conclusion

I hope our tips if your iPhone doesn’t see the SIM card helped you. Before you panic and rush to the nearest service center, try following the universal algorithm described above. In 85% of cases, these actions help solve the problem without additional time and money. The most important thing is accuracy and attentiveness. See you on the pages of the site!

Video instruction

We repair a broken SIM port ourselves.

The telephone has become an integral accessory and assistant in our lives. But sometimes we are upset by certain breakdowns. Often the phone does not recognize the SIM card. If there is such a malfunction, a message appears on the display of the cellular device indicating the need to insert it. It may also turn on in offline mode if there is support for working without a SIM card. What to do in such a situation? First we need to figure out why this happened.

What are the problems with a SIM card?

There can be many reasons. The main one is a malfunction of the SIM card. This happens when it wears out or its contacts become damaged. There is a particularly high risk of this if you frequently replace the SIM card, reinstall it in different phones and devices. In this situation, you need to contact mobile operator, it will replace your card.

It also happens that the phone does not see the SIM card because it is “locked” to a specific operator. That is, it does not support numbers from other companies. You can cope with this problem by “locking” your device to other operators. Not everyone understands how this procedure is done; it is better to find a service center.

A malfunction of the slot in which the card is installed is a fairly common situation. With it, the phone does not recognize the SIM card. This also happens when numbers are changed frequently, when the slot or the device itself is damaged. It is necessary to carry out diagnostics and replace the part at a service center.

The phone does not see the SIM card even if the operating system or software malfunctions ( software) apparatus. This happens when flashing is incorrect, as well as when reinstalling incorrectly. How to fix this problem? Reinstall again, you can still restore backup copy. If you can’t handle it yourself, then go to a service center.

Let's look at a number of malfunctions in more detail to know what to do in specific cases:

Damage to the SIM connector (this is the card holder), which occurs when the SIM card is removed or inserted carelessly, when improvised devices are used that can cause harm. In this case, the contact blades may become bent or broken. Sometimes it is possible to replace such elements, otherwise a new connector is required.

The device also loses the card if the soldering at the connector contacts is broken. The cause is, for example, falling of the phone or also exposure to improvised means. Damage is eliminated by soldering the leads.

Sometimes the piping elements of the SIM connector circuit fail: resistors, capacitors, varistors. Moisture and shock are what cause this to happen. All faulty elements must be replaced.

It happens that the strapping elements break off when changing the SIM card or wear out. It is necessary to restore all parts according to the diagram. Contact service.

Here is an example from life. Recently a person encountered a problem in which the HTC phone does not see the SIM card. He was recommended two options:

1. Wipe the card contacts with an eraser, as they may have oxidized or become dirty.

2. Go to the operator and ask for a new SIM card.

The person said that wiping the SIM card with alcohol helped. You just have to do it carefully! Each case must be considered individually, but do not be discouraged, often the situation can be corrected!

Your phone doesn't see your SIM card and you can't get in touch? The first group of reasons is a problem in the SIM card itself, the second is problems in the device. We will describe in detail all situations and what to do in each specific case if the SIM card does not work.

SIM card problem

Let's start with the first group of reasons, when the SIM card is the culprit. Below is a description of what causes each situation. Find out what works for you and find out how to fix the problem.

The card has expired

There is no regulated shelf life for Sim, nor is there a service life. For correct operation The norm is a period of seven years. The service life depends on the user himself: how often the SIM card is moved from device to device - the mashing process is in progress, if it gets into water or other liquids - the oxidation process begins, what type of device it was on before and is now on - different power levels of gadgets.
If the SIM card lasts a long time and stops working, replace it with your operator. Contact an official point of sale with your passport.
Remember that the service will be provided only to the owner of the number, or to a representative with a power of attorney confirmed by a notary.

The card is damaged

A common reason when a SIM card does not work is mechanical damage. Even if the contacts are saved, but the plastic carrier is broken, the edge is chipped, or the shape of the card is damaged, the gadget may not recognize the SIM card due to its incorrect location in the device slot.
Solution - Sim replacement and receiving a duplicate while maintaining the number and balance. Tele2 operator will replace the card when personal address owner to the subscriber service point. The procedure requires verification of identity; bring your passport. To receive a duplicate you need to pay 50 rubles, the entire amount will be credited to your account after activation.

Unsuccessful conversion to microSIM


In the communication store, a special stapler with the exact size of the new shape is used to cut SIM cards. The risk is minimal, but there is a risk when old-format SIM cards with a wide contact field are used for cropping. Self-circumcision with scissors can also cause damage. As a result, the device does not see the Sim.
There is only one way out - getting a duplicate. The situation can be prevented if, when purchasing starter pack choose immediately correct format, and to change from micro/nano Sim to mini Sim, purchase plastic adapters.

Damaged SIM card contacts

The SIM card has contacts:

  • Vcc – power supply;
  • Reset – control;
  • Cloc – clock frequency;
  • Vpp – for recording information;
  • I/O – input/output;
  • General (“ground”).

Damage to any contact leads to failure. You will have to apply for a new SIM.

The SIM card is slightly dirty

If there is contamination, use the following cleaning methods:

  • eraser - rub gently Sim contacts regular eraser for erasing;
  • alcohol - with a slightly moistened disk, wipe the SIM card on all sides.

You cannot wash it in water or with cleaning products, as such actions will damage it. If cleaning does not produce results, replace the Sim with a new one.

Any problem with Sim card can be solved by replacing it with a new one. All operators provide the service free of charge, regardless of the reason.

The problem is in the phone

Let's move on to the second group, in which the problem “SIM not working” depends on the phone. Some reasons can be eliminated on your own, others will require contacting a service center.

Incorrect settings

Why doesn't my phone see the SIM card?

  1. Check to see if you have Airplane mode or offline mode" When airplane mode is turned on, mobile communication services will automatically turn off.
    • click the settings icon;
    • select additional settings;
    • disable the option.

    Did not help? Pull out the SIM card, wait about half a minute and reinsert it. Reboot your phone/tablet.

  2. Check if the SIM card is enabled in the phone settings; this is important for devices with two or more SIM cards on Android:
    • go to settings options;
    • select “Sim Card Manager”;
    • activate the desired SIM card by clicking on it, or switch the slider next to it to “on” mode.

    If it doesn't help, try sending a message with an inactive Sim and the system will automatically ask you to enable the card.

  3. The phone does not see the new SIM card - activation failed. What to do:
    • install the SIM, turn on the device;
    • enter the PIN code (indicated on the plastic blister where the Sim was attached);
    • make a call to toll free number activation.
  4. No online registration. Required manual search nearest station via settings:
    • select settings;
    • click additional settings;
    • tap mobile networks.

    The device will start searching for all available operators and display a list of possible connections. Select what you need and activate it.

If none of the methods work, do full reset settings: “settings” – “backup and reset” – “data reset”. Pre-archive data for auto recovery.

The phone is tied to a specific operator


When you buy a phone at a dealership at a promotion with a big discount, most likely it is automatically tied to a specific operator. To find out whether this is true or not, take a SIM card from another operator and insert it into the device. No connection? Your model is tied to a specific operator.
There are two options to resolve the issue:

  • contact the service center, where they will make changes to the software using special equipment;
  • change the software yourself.

The second option carries the risk of incorrectly changing the software and causing the device to fail. The most harmless way is to search for another operator manually (described in paragraph 4 of the section above), but it does not always help.

SIM card slot damaged

This problem occurs due to frequent changes of SIM cards, ingress of water, sand and dust, iron oxidation, shaking and falling of the gadget. What to do? First, clean the slot in the device. Treat with alcohol and check that there are no dents or other defects. Has some contact been broken? The part is broken. It is not recommended to disassemble the device yourself; contact service.

SIM card holder is faulty

Another reason why the smartphone does not see the SIM card is the deformation of the holder. The SIM card does not fit tightly into the slot in the phone and there is no contact. Place a piece of tape on the SIM card or place a folded piece of paper. Sim will fit more tightly to the contacts and the problem will be solved. The result is not achieved, or you cannot reach the holder yourself - contact the service center.

Broken soldering of cardholder contacts

During the operation of the smartphone, dirt, water gets inside, mechanical damage is possible, and as a result, the contacts of the card holder come off. If you encounter this problem, do not carry out repairs yourself. Take the device to a service center.
Operating system or software malfunction
The phone may not see Sim due to an operating system update. For example, when setting 10 Windows versions Phone system does not have time to complete initialization and issues a code ahead of time absence of Sim. Solutions:

  • “roll back” the software to the previous version;
  • return to factory settings.

For correct operation, install licensed software. It is guaranteed that the problem can be solved at the service center.

The phone does not recognize the second SIM card

When the SIM card does not work in the second slot, first check that the SIM itself is working. Move it to another working device, if everything works, then the problem is in the phone. What could be:

  • Incorrect firmware change, software - reinstall operating system from the manufacturer’s official website or reset the settings to factory settings;
  • incorrect settings - enable Sim in the device manager, or send an SMS from an inactive SIM card;
  • IMEI error - check the number on the case and in the device program for consistency using command #06#.

Not every phone can work with two cards at the same time, only top models. In budget devices, SIM cards work alternately.

After flashing the phone does not see the SIM card


The problem in the firmware is immediately visible; in addition to the smartphone’s refusal to detect the SIM card, some functions stop working.
Solution two - return to the restore point or replace the firmware. You can do it yourself by connecting the gadget to your computer via USB cable and download the licensed software from the official website, or contact the ASC (authorized service center).

Invalid imei

After checking it, you realized that it was worn out or did not match. How to recover? For all operating systems:

  • open service menu using code:
    Universal code*#3646633# *#*#3646633#*#*
    Samsung*#*#8255*#*# *#*#4636*#*#
    HTC*#*#3424*#*# *#*#4636*#*#
    Sony*#*#7378423*#*#
    IPhone*#*#4634*#*#
    Huawei*#*#2846579*#*#
    Philips, Fly, Alcatel*#*#3646633*#*#
    Processor MTK*#*#54298*#*# *#*#3646633*#*#

    dial the combination as a number and press the “call” key;

  • go to “CDS Information – Radio Information – Phone1”;
  • at the top under the AT+ item, enter in the field EGMR=1.7 “enter the correct IMEI” - for the first SIM card, or EGMR=1.10 “enter the correct IMEI” - for the second Sim;
  • press the “SEND AT COMMAND” button and the new settings will take effect;
  • restart your smartphone.

You can fix it using the “Chamelephon” application if you have ROOT rights. You can always contact the service center to resolve the issue.

The phone sees the SIM card, but does not connect to the network

Possible reasons when the SIM card does not see the network:

  • breakdown in the signal amplifier, connector, controller, antenna, radio path;
  • software failure - network search does not start automatically;
  • The communication standard does not correspond - the phone does not work on Russian GSM frequencies.

In the first case, a trip to the service center is inevitable. In the second, you need to start searching for the network manually, and then change the device firmware. The third option occurs when the phone was purchased abroad, for example, in a Chinese online store and is not able to work in our country - this cannot be fixed.
How to activate a SIM card if there is no network? Contact the operator’s sales office, through your personal account, or call technical support from a working number.

SIM card is not registered on the network

Check:

  • The number is blocked - you can find out in personal account or by contacting the hotline;
  • The microchip has burned out - replace the SIM card from the operator;
  • does not search for the network automatically - start a manual search;
  • does not match have - change the number yourself or contact the service center;
  • Offline mode is enabled - disable the option.

The SIM card will not be able to register on the network if the firmware contains errors, the Sim itself is damaged, or there is a problem with the device.

SIM card does not work - only emergency calls

The "emergency calls only" message appears when:

  • There are not enough funds in the account - top up the balance;
  • If you are outside the reception area, change your location;
  • "offline mode" is enabled - turn off the function.

Mobile operator help

Questions related to work Sim card can and should be resolved with the operator. To do this, just call the support service or contact the customer service office.

Find the addresses of the nearest offices on the official websites of the operators.


2024 gtavrl.ru.