Table of Contents

“Locked” sim card

It may happen that you try to insert a SIM of a certain operator into the iPhone 5 or any other device, and the phone is set at the factory to work with a different network. In this case, numbers of other cellular operators are not supported. You can deal with this problem by contacting a good service center. Or on your own, but it’s risky, it’s very easy to ditch expensive electronics.

Phone malfunction

If the iPhone appears to malfunction, the first thing to try is to restart the phone. Typically, this simple method will solve a communication problem successfully in most cases.

Unused line in the “No network” state while talking on the phone

However, you cannot use two cellular networks at the same time on iPhone for data transfer. When using one cutter line to call another cutter line, the message “No network” is displayed. If your carrier supports Wi-Fi calling for a second phone number and Wi-Fi Calling is enabled, you can receive incoming calls to that phone number. If the call is not on the default data line cutter, you must enable Wi-Fi Call for the default data line cutter and Allow Cellular Data Switching to receive calls to the data line default.

How to soft restart iPhone?

Press the power off button and hold it for a few seconds.

Wait until the message appears on the screen: “Slide to Power Off”.

Press the button again to turn on the phone.

You will need to enter a password for identification, even if you usually used your fingerprint for this.

Problems with firmware

The fact that the “apple” gadget does not see the SIM may be the result of an iOS software failure, due to which the firmware of the cellular modem has flown. It will not be possible to identify such a malfunction without having special equipment at hand. However, if the user tried to install several cards in the gadget and the device did not recognize any of them, there is no need to rush to the service center. First you need to try to change the firmware on the iPhone.

Use iTunes to replace the firmware. The user needs to connect the gadget to the PC, go to the device control menu (1) and click on the “Restore iPhone” button (2).

iphone

iTunes will download the latest official firmware itself and install it on your smartphone. If the user wants the iOS on his gadget to remain in the current version and not be updated, he should independently find a suitable firmware on the Internet (IPSW format file) and download it to the mobile device by pressing the “Restore” combination (in iTunes) Shift (on the keyboard ).

Incorrect connection

  • First of all, you should make sure that the SIM card is connected to the phone correctly. First, you need to open the SIM card tray using a special paper clip.

When the tray is removed from the device, pull out the SIM card. Reinstall it with the chip down. Also make sure the cut corner of the card aligns with the notch in the tray.

Read more: How to insert a SIM card into an iPhone

  • Press lightly on the SIM card until it fits snugly into the tray. Then replace the tray by pushing it in until it clicks into place. Turn on the screen and check if the operator is detected in the upper left corner of the screen.
  • 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 print itself is damaged during careless installation or removal. Some people use hazardous tools at hand that can damage the fragile parts of the device. Contact petals can bend or even break. You have to change such elements or install a completely new connector.

    Reasons for the failure

    The reason for the fact that your iPhone does not see the SIM card can be anything from system glitches to a burned-out module on the motherboard. But there is a list of the most common reasons, we will consider each of them in detail.

    Old SIM

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

    Drops and bumps, moisture ingress

    When the phone falls down, despite the absence of external chips and 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 pulling out the slot (you need a special key or use a paper clip) and then push it back into the slot. Sometimes restarting the device helps. If the problem is not resolved, then you will have to contact an experienced mobile repair technician. If the reason turns out to be the hit of the device in a humid environment, then you cannot do without a qualified master.

    Firmware glitch

    It will be very difficult to independently determine what exactly the firmware or system errors affect the fact that the smart device does not recognize the card. But in the absence of other provoking factors, we try to update iOS to the current version or return it to the previous version using iTunes.

    If the iPhone does not see the SIM card, we do it clearly according to the instructions.

    IPhone users often turn to the masters with the fact that 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 the introduction of new innovations, developers systematically ignore such minor, in their opinion, shortcomings. In any case, users have to look for ways to solve this problem on their own. What to do? How to fix the breakage yourself? Who to contact for professional help?

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

    Why is the SIM card icon missing on iPhone 11?

    If there is no SIM card icon on Apple smartphones, you need to check if your gadget is blocked for one cellular operator. Unlock will help to solve the problem. All the user needs to do is contact the service center. You should not try to interfere with the operation of the iPhone on your own, as this can lead to serious damage and additional repair costs. The most common reasons for iPhone 11 not seeing SIM card include:

    • The SIM card is out of date;
    • failure of the firmware;
    • failure of iPhone parts;
    • changing network settings;
    • incorrect installation of the reader.

    If the SIM is out of order, then you will need to change the module in the salon of the serving cellular operator. Often, the network in a smartphone is lost after the next update of the operating system. To restore network functionality, you must update iOS to the latest version. However, this option is only suitable for those users who have backed up their data using the backup function. If this method does not help display the SIM card, then it is recommended to contact the service center.

    READ  How to Reset ID on iPhone

    What to do if iPhone can’t see SIM card?

    If the device is damaged due to mechanical impact, then without opening it, it will be quite problematic to find the source of the malfunction. Antenna, contacts, card reader may fail due to falling, impact or squeezing. It is impossible to open the smartphone case on your own, as this can lead to more serious damage and higher financial costs. If the message “Invalid SIM” appears on the phone screen, then you need to do the following:

    • Make sure your cellular plan is activated.
    • Update your operating system to the latest version.
    • Restart iPhone 11.
    • Update your cellular operator settings. In the main settings, go to the “About this device” section and confirm the update offer.
    • Remove the SIM card from the slot and reinsert it. You can try to put another SIM-ku.

    After carrying out the diagnostics, the wizard will be able to accurately answer the question why the iPhone does not see the SIM card. Internal breakdowns require urgent repair, as they affect the operation of the entire device. Can’t see the iPhone 11 SIM card for no apparent reason? You need to check your network settings. If the problem is a failed settings, then you need to go to the section for resetting network settings. The iPhone will then be able to detect the card. You need to make sure that the SIM is installed correctly. To do this, just use a special key and pull the card out of the smartphone slot.

    If the special key has been lost, then you can take any sharp object. a needle, a paper clip. If you do not know where the slot is, then you should look for it on the right side of the case. If the phone does not see the SIM card, then you need to start by diagnosing the device itself. Do not waste time hoping that the malfunction will be eliminated on its own. Contact the service center urgently. An experienced technician will be able to quickly find the cause of a smartphone and SIM card malfunction.

    Can’t see SIM card iPhone 11

    It is not uncommon for users to face a situation where the iPhone stops seeing the SIM card. A malfunction of the SIM-reader can be associated with various reasons, therefore it is necessary to determine what caused the incorrect operation of the smartphone. An experienced technician will help you fix problems with your SIM card in a matter of minutes. If you do not see the iPhone 11 SIM card, then you should understand that the device is locked for a specific operator. So, problems with the operator’s card “Megafon” should be solved in the company salon. Operators of other operators in this case will not be able to help.

    Professional repair

    If there are problems with the SIM-card and the phone has stopped seeing it, then it is quite problematic to find their cause on your own. The service center will help you repair broken SIM-reader mechanisms or fix problems with unsuccessful firmware. The service center uses modern equipment, programs and tools that allow you to repair your smartphone quickly and efficiently. If you are faced with the fact that the smartphone does not see the SIM-ku, then you can always contact our specialized company.

    We offer comprehensive iPhone diagnostics, high-quality repairs in a short time. Within 1-2 hours after handing over the gadget for verification, you can pick it up completely intact and with restored functions. To repair iPhone 11, just contact us in an affordable way and make an appointment for a diagnosis or consultation. We provide a full range of services for cleaning, repairing phones with a guarantee.

    Antenna problems

    often than others, if damaged, dampness suffers the antenna, which is responsible for receiving a cellular signal. As a result of mechanical action, it oxidizes and breaks down.

    Check coverage area

    The situation when the network is lost on the iPhone often has a simple reason. the device is located in an area that is not covered by the operator. You can create Wi-Fi using another gadget that is connected to the mobile Internet and distributes a wireless network.

    No network on iPhone. solving the problem

    The question why there is no network on the iPhone worries many owners of Apple gadgets. Unfortunately, this problem occurs quite often, regardless of the version of the iPhone and iPad.

    Firmware upgrade

    Updating the firmware has a beneficial effect on the operation of the Apple device. The user can easily cope with such a task using iTunes. After the iPhone is connected to the PC, in the “Overview” tab in iTunes, the basic characteristics of the device are displayed: model, phone number, firmware version, and others. Select the “Update” option.

    Check time and date

    Incorrect setting of the time zone parameters, the current date may cause an ineffective network search. To fix the problem you need:

    • Go to the “Settings” menu.
    • In the “General” section, select “Date and time”.
    • Activate the “Automatic” option.

    After setting the parameters, you need to restart your iPhone.

    Check SIM card

    One of the possible problems. The iPhone cannot see the SIM card. This often happens when the card is deformed during cutting, moisture ingress, mechanical stress.

    Replacing the antenna

    The service center will help you to replace the antenna if it is damaged, oxidized or defective.

    Remove and return the SIM card

    • Pull out the SIM-card using the key that comes with the device.
    • Make sure it is in good working order and put it back in place.

    If the SIM card has no visible damage, you should look for another reason.

    No network, search, or why the iPhone does not see the operator’s SIM card

    Sometimes users face such a problem while traveling, using roaming, after reinstalling iOS, hardware repair (battery or display replacement) of the smartphone, or a long period of inactivity (without recharging). the operator logo disappears on the iPhone and there is no connection to the cellular network. Let’s try to figure out what is the cause of the “breakdown” in such cases and how to fix it.

    The problem is aggravated by the fact that the employees of service centers in Russia, Ukraine, Belarus, etc. They are far from always able to identify the real reason for the lack of connection to the cellular network (or deliberately hide it) and perform a number of expensive procedures. from a simple reinstallation of iOS and ending with hardware repair using a soldering iron and other “jewelry” tools.

    Check if the SIM card is working?

    Unfortunately, SIM cards also fail. Therefore, first of all, check if the SIM card in your iPhone works. This can be done, for example, by installing a SIM card in another smartphone.

    What to do if instead of the operator on the iPhone it says “no network” or the smartphone does not see the SIM card after repair (flashing)

    In the event of the described problem, first of all, you need to look at the set time. if the smartphone does not correctly display the current time and date, then you need to perform the following simple algorithm of actions:

    Connect the device to an active Wi-Fi network;

    Go to Settings → General → Date and time;

    Toggle the “Automatic” checkbox to the active position (if set by default. turn it off and on);

    No network, search or what to do when the iPhone cannot see the operator’s SIM card while roaming abroad

    If you have ever traveled abroad with your iPhone, you may have encountered such a problem. You turned off your smartphone during the flight, and when you turned it on, your device does not connect to the cellular network, but displays the message “No network”. What to do?

    The Apple Support Forum has a corresponding discussion thread with a million pages to read. But even if you honestly start reading everything in order to figure it out, you will not get an answer to your question even after a few hours of careful reading.

    The system message “No network” (Searching for a network) appears when your iPhone or iPad (yes, the problem is relevant for Apple tablets) cannot connect to it, or connects to an operator, but cannot establish a connection with any Internet or cellular network. You can even see the name of the operator who serves you. but then it will disappear anyway.

    This error can have several reasons at once. But first, you should exclude the most common and simple of them. And anyone can do it.

    SIM card malfunction

    If iPhone has stopped seeing the SIM card, the problem may be with that device. Take out the card and carefully inspect, the stripes and the metal base should not be damaged. Deep scratches, creases, signs of corrosion will indicate that the SIM card will have to be urgently replaced. Most often this happens if the phone has been in water. the device is not afraid of moisture, and the SIM contacts are oxidized. It is worth wiping with a cotton pad dipped in an alcoholic liquid. this helps with oxidation. But if the SIM card is not found by the smartphone, then you will have to pay a visit to the office of the mobile operator with a passport to restore the card.

    Firmware upgrade

    Updating the device through iTunes will also help solve the problem:

    • install the program on your computer;
    • connect your smartphone using a cable;
    • select a specific device in iTunes;
    • go to the “Overview” tab;
    • click the “Update” button;
    • click on the “Download” link;
    • confirm your choice by clicking “Update”.

    After updating the firmware, the smartphone will start normally. If there is a problem with the SIM card, the iPhone will kindly inform the user about it. A similar solution helps if there were errors with the previous installation of the update or the iOS version was not stable.

    READ  How to turn off Find iPhone

    Change SIM

    The answer for those who are looking for why the iPhone does not read the SIM card and what to do in this case is to try changing the card in the device. Contact a friend who also has an iPhone with a working sim card and check if it will work in your device. Put your SIM card in another phone. if the card does not work, it will be replaced. If it works, then the problem is with the tray or the device itself. It is also worth contacting the mobile operator, sometimes the network disappears due to technical work on the mowing line.

    Problems with firmware

    Sometimes the answer to the question “why the iPhone does not read the SIM card” is an incorrect firmware update of the device. To rectify the situation, the smartphone should be rolled back to factory settings. For this:

    • open iTunes on your computer;
    • connect your smartphone with a cable to your computer;
    • when prompted to enter a password. enter;
    • select the defined device in the program;
    • press the “Restore” button, and then confirm your choice;
    • wait for the recovery to complete.

    The smartphone will turn on, but all the information will have to be entered again. the iPhone will return to the state of the new device.

    Problems with firmware

    The fact that the “apple” gadget does not see the SIM may be the result of an iOS software failure, due to which the firmware of the cellular modem has flown. It will not be possible to identify such a malfunction without having special equipment at hand. However, if the user tried to install several cards in the gadget and the device did not recognize any of them, there is no need to rush to the service center. First you need to try to change the firmware on the iPhone.

    Use iTunes to replace the firmware. The user needs to connect the gadget to the PC, go to the device control menu (1) and click on the “Restore iPhone” button (2).

    iTunes will download the latest official firmware itself and install it on your smartphone. If the user wants the iOS on his gadget to remain in the current version and not be updated, he should independently find a suitable firmware on the Internet (IPSW format file) and download it to the mobile device by pressing the “Restore” combination (in iTunes) Shift (on the keyboard ).

    To replace the firmware, it is better to use the latest version of the iTunes media combine.

    If flashing didn’t fix the SIM problem, the iPhone is most likely broken.

    IPhone breakdown

    Here are just a few reasons that can lead to physical damage to the iPhone and the inability of the gadget to see the SIM card:

      Falling the device and other mechanical influences on it may cause damage to the SIM-reader mechanism. The use of a low-quality charger leads to a short circuit. The short circuit, in turn, causes burnout of diodes, resistors and other small components. Filling. It’s worth checking out the humidity sensor: on the iPhone 4, it is located in the headphone jack and for charging, and on the latest devices, in the SIM slot. If a red dot is clearly visible, then the iPhone is a “drowned man”.

    If the user does not carefully insert the tray into the iPhone, it may cause a malfunction of the SIM card slot. There is only one way to eliminate such a breakdown. by completely replacing the slot.

    Whatever the reason for the iPhone malfunction, it is not recommended to disassemble the mobile device and try to solve the problem yourself. There is a risk of making it worse. Only specialists of service centers, who have professional equipment at their disposal, are able to accurately diagnose a breakdown and correctly eliminate it.

    You shouldn’t worry too much about finances: with the modern, exorbitant level of competition, service centers set fairly loyal for their services. Replacing the SIM slot, for example, will cost the iPhone owner 1.5-2 thousand rubles.

    Why iPhone can’t see SIM card?

    If the iPhone does not see the SIM card, the owner of the gadget does not need to immediately “sprinkle ashes on his head”. first you should find out the reason. It is possible that the solution to this problem will take no more than a few minutes.

    Despite the fact that the iPhone is considered the most reliable mobile device, its owner is also not insured against breakdowns and expenses related to repairs. A common malfunction in recent years has become the refusal of “apple” smartphones to recognize SIM. On the screen of the iPhone, which stopped seeing the SIM card, a similar message appears:

    There are many possible reasons for this error. We will tell you about each of them and give recommendations on what to do to solve the problem.

    SIM card malfunction

    The most common reason why the iPhone does not see the SIM is because the SIM is not properly trimmed. Pruning is not that difficult. even an amateur armed with scissors can do the job. However, there is always a risk of touching the chip and thereby disabling the SIM. Salon employees who cut cards for money are also not able to guarantee that everything will go “like clockwork”.

    This may not only be due to incorrect cropping. SIM cards tend to demagnetize. that is, fail for no apparent reason. The iPhone’s refusal to recognize the SIM card is also caused by the fact that the card has an old-style chip. Nowadays, such chips are used extremely rarely, but no one is insured against a “meeting” with them.

    These are the SIM cards iPhone users have nothing to try to cut:

    How can you check if the SIM card is really the case? It’s very simple: take the card out of your phone and insert it into another device with a suitable SIM slot. If this device does not see the SIM card either, you need to go to the communication salon with your passport and ask the consultant to replace the card. The procedure is completely free; it will take no more than 5 minutes.

    After replacing the SIM, the numbers on the card will not remain. Therefore, before heading to the service office, it is worth copying contacts from iPhone to computer.

    If another device recognizes the card and does not experience any problems when working with it, the owner of the iPhone will be just right. it just won’t be possible to solve the problem.

    Availability of SIM-Lock on iPhone

    Most often iPhones are locked under SIM cards of ATT and Verizon operators.

    Of course, the best way to solve the problem with SIM-Lock is to return the device to an unscrupulous seller and then purchase a gadget certified to work in Russia. However, most often sellers refuse to return, arguing that the smartphone is in good working order. after all, SIM-Lock is not a breakdown.

    There is no need to “hang up” when you find yourself with a “locked” iPhone in your hands. there are many solutions to this problem:

      Contacting the workshop. The service specialists will remove the SIM-Lock, but will demand an impressive amount for the work (from 100). The owner of the gadget should remember that after the “artisanal” removal of the “lock”, the iPhone loses its warranty. Do-it-yourself “unlock”. You can also try to unlock your iPhone yourself. there are a number of Internet services that allow you to do this (for example, IMEI-Server.ru). In this case, you will also have to spend money, but the amount will be much more digestible. Online services ask on average 2. 3 for help. Purchase of Turbo-SIM. Turbo-SIM is an adapter that is inserted into the tray along with a SIM card and unlocks the radio module when the iPhone is activated. The purchase of such an adapter will cost the user about 1.5-2 thousand rubles. Using Turbo-SIM can lead to a decrease in the quality of communication and problems when setting up iMessage, but of all the ways to get rid of SIM-Lock, this is perhaps the most effective. Contacting a telecom operator. The user is finally able to write a letter to the provider, under whose SIM-cards the iPhone is locked, and ask for an official unlock. This method has many disadvantages: firstly, the operator will have to wait a long time for the operator’s reaction, secondly, you need to write in English and preferably without the help of the “clumsy” Google Translate, and thirdly, you will also have to pay for the official unlock. (ATT) up to 15 thousand rubles (Finnish company DNA).

    The official “unlock” also has a significant advantage. it does not entail the loss of the warranty on the iPhone.

    The fact that the iPhone does not see the SIM card is almost always the result of carelessness or carelessness of the owner of the gadget. Even if the user has become a victim of an unscrupulous seller who “sold” a locked smartphone, he should only blame himself. he did not pay enough attention to preliminary verification of an expensive device.

    No SIM Card & Invalid SIM or Card Failure Error on iPhone 12 Pro Max XR/XS Can’t Find SIM iOS 14

    Solving a problem is much more difficult than preventing it from occurring. and moreover, more expensive. If the iPhone does not see the SIM card because it is locked or broken, the user will definitely have to part with a certain amount of money in order to make the device work. It will be possible to fix the situation for free only if the problem lies in the SIM card.

    IPhone Activation Failed. Everything Is Very Bad

    Why does the title say that everything is very bad?

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    Because, it is quite possible that the modem in the device “died”.

    Indirectly, this can be confirmed by the fact that by connecting the gadget to a computer and iTunes, absolutely nothing happens. no activation or something even remotely similar to it.

    There is another way to test this terrible guess.

    On the welcome screen, click on the “letter i in a circle” icon.

    After clicking, on a normal and working iPhone, the serial number of the device should appear. If IMEI does not appear, but only standards are written, etc. then I have bad news, the modem in your iPhone or iPad has ordered a long life. Naturally, with such a malfunction, the device cannot be activated. What to do?

    • Contact the service, the repair price is not very high (relative to the cost of the device), but they undertake such a repair of the unit and no one gives guarantees.
    • You can try to put it in the freezer (at your own peril and risk!), There is a possibility that the contacts will get “right” at least for a while, and it will turn out to activate it.
    • Warm up with a hairdryer (also at your own peril and risk!). the effect is similar to freezing (it may or may not appear).

    It must be understood that the last two points are, of course, a fierce “collective farm” and they should be carried out very carefully. But it helps some. By the way, updating the firmware on such gadgets is useless, during this operation you will get an error.

    All that is described above is not your case? Is IMEI displayed and is the modem OK? Moving on to the next item!

    IPhone Activation Failed. Server Unavailable or Worse?

    Hey! It doesn’t matter what you did in order to get the activation failed error. We reset the content and settings, flashed it, performed an update, recovered. any of these actions leads to the fact that the device must be reactivated. Yes, yes, yes, you will have to go through exactly the same procedure again as when you first turned on the gadget. And here one very large and large ambush can await us.

    An iPhone or iPad can easily warn you that activation is impossible, because: “Your iPhone could not be activated because the activation server is temporarily unavailable. Try connecting your iPhone to iTunes to activate, or try again in a few minutes. If the problem persists, contact Apple Support: Apple.com/us/support “.

    It would seem that everything is very logical. The server is unavailable, Apple has problems, we wait until the failure passes and we swear at the company. However, not everything is so simple.

    And in general, if you are faced with such a message, then I will have two news for you, good and bad. And we’ll probably start with a bad one

    iPhone on iOS 11 and iOS 12 won’t activate after factory reset

    This text is an update to the article after the release of iOS 11.

    We have already discussed this situation in the Комментарии и мнения владельцев, but for those who are too lazy to read, here is a short excerpt from all this.

    Since the release of iOS 11, Apple has changed its policy regarding unofficial iPhone repairs. If non-original components were installed in the device, then after the procedure for resetting the settings and content, you can get a “brick”. it will be impossible to activate the phone.

    Who is at risk? Devices (running iOS 11 and iOS 12) that:

    iPhone 11’s: SIM Card Not Working, No Service, Constantly Searching, No SIM (FIXED!)

    • Have ever been repaired (with replacement of parts. Nand-memory, modem, Wi-Fi and Bluetooth module) in unauthorized service centers.
    • They are the so-called “handicraft restored” iPhones (smartphones assembled by someone who and where). unscrupulous sellers very often sell them under the guise of new.

    During the power-on phase (after a factory reset and content reset or a firmware restore), the iPhone sends data about the components installed inside it to Apple servers. If this information does not match the base of the “apple” company, then the activation of the device is blocked.

    So, what exactly to do with this now?

    • If there is a guarantee. use it.
    • Some unofficial service centers may try to solve this problem with special equipment. But, as a rule, no one gives any guarantees. even if the activation failure can be “bypassed” now, then in the future everything can happen again.

    Here is such a sad story. However, it is not at all necessary that the error occurs precisely because of this

    iPhone failed to activate. the server is to blame or

    In fact, failure can occur for a variety of reasons. And the right decision would be to check everything in order, let’s go!

    • Check if the SIM card is inserted and is it working? The advice is of course very obvious, but everything can happen.
    • Make sure you have internet access again.
    • Apple servers are unavailable. how to check their status at the moment? This often happens on the days when new versions of iOS are released. Many people around the world are trying to get a new firmware as quickly as possible and the servers simply cannot withstand such an influx of people. In that case, you just need to wait
    • Use a different internet connection. Some Wi-Fi networks can be configured to block access to Apple servers.
    • Use iTunes to activate (be sure to update it to the latest version!)
    • Hard reset your iPhone or iPad. Hold down the Home and Power buttons. do not release them until the iPhone turns off.

    By the way, the reason for Activation Error may be the fact that a beta version of the firmware was installed on the iPhone, and the device was not registered in the developer program. In this case, the error text will be like this:

    This device is not registered as part of the iPhone Developer Program

    In this case, you need to go to the Apple developer portal (developer.Apple.com) and register the gadget.

    As you can see, the reason that the iPhone refuses to activate and crashes can be a variety of situations:

    • From commonplace. lack of Internet, unavailability of servers, “bugs” in iOS.
    • To very difficult ones. a breakdown of the modem and the newly minted “iOS 11 syndrome”.

    And if the first ones are solved quite simply (wait, change the SIM-card, etc.), then the second (“iron” problems) are corrected only with the participation of a competent service center specialist. But I, as usual, sincerely hope that this is not your case.

    Phone malfunction

    If the iPhone appears to malfunction, the first thing to try is to restart the phone. Typically, this simple method will solve a communication problem successfully in most cases.

    Why iPhone can’t see SIM card

    Below we will consider the main list of reasons that can affect the occurrence of a problem with the visibility of the SIM card on your phone, and options for their elimination.

    SIM card malfunction

    Do not exclude the possibility that the problem is not in the iPhone at all, but in the card itself, which for some reason is out of order. You can check this using another phone: just connect a SIM card to it and check its performance. If you are convinced that the card is faulty, you will need to contact the nearest operator’s salon. As a rule, the procedure for replacing the SIM card is provided free of charge.

    What to do if iPhone can’t see SIM card

    Failure in network settings

    A failure in the network settings can occur both immediately after the start of using the iPhone, and after a while. To fix it, you must try to do a network settings reset.

      Open the parameters on your smartphone, and then go to the “Basic” section.

    Tap on the item “Reset network settings” and confirm the start of the process using the password code.

    Firmware malfunction

    If the phone still does not see the connected SIM card, it should be assumed that there is a serious software glitch in iOS. You can solve it by flashing the device.

    • Connect iPhone to your computer using a USB cable and then launch iTunes.
    • Put your smartphone in DFU mode. This mode is emergency and is used to solve problems in the operation of the device’s operating system.

    Read more: How to put iPhone into DFU mode
    If the iPhone input to DFU is correct, iTunes will report the connected device. Don’t worry if the screen displays the wrong color of your smartphone. Click on the “OK” button.

    Then iTunes will offer to restore the device. Start this process and wait for it to finish: first, the program will automatically download the latest version of iOS, and then proceed to installing the firmware.

    When a welcome window appears on the smartphone screen, activate the device and check if the cellular operator is detected.

    Incorrect connection

    • First of all, you should make sure that the SIM card is connected to the phone correctly. First, you need to open the SIM card tray using a special paper clip.

    When the tray is removed from the device, pull out the SIM card. Reinstall it with the chip down. Also make sure the cut corner of the card aligns with the notch in the tray.

  • Press lightly on the SIM card until it fits snugly into the tray. Then replace the tray by pushing it in until it clicks into place. Turn on the screen and check if the operator is detected in the upper left corner of the screen.
  • BYRGPUB.COM 2021