Errors 

Why doesn't iPhone see SIM card?

If another device recognizes card and does not experience any problems when working with it, the owner of the iPhone will be happy to solve the problem just as easy It won't work.

Availability of Sim-Lock on iPhone

Large stores and store chains do not sell locked iPhones. But when buying a gadget in a small store, in a store, or “from hand” on Avito, there is always a risk of getting a device that can work with a SIM card from only one provider - and one that does not provide services in Russia.

Most often, iPhones are locked to SIM cards from AT&T and Verizon.

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

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

  • Contact the workshop. Service specialists will remove the SIM-Lock, but will demand a significant amount of money for the work (from $100). The owner of the gadget should remember that after the “makeshift” removal of the “lock”, the iPhone loses its warranty.
  • "Unlocking" with your own hands. You can try to unlock the 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 manageable. Online services charge an average of 2 – 3 dollars for help.
  • Purchasing Turbo-Sim. Turbo-Sim is an adapter that is inserted into the tray along with the SIM card and unlocks the radio module when the iPhone is activated. The purchase of such an adapter will cost the user approximately 1.5 – 2 thousand rubles. Using Turbo-Sim may lead to a decrease in communication quality and problems when setting up iMessage, but among all the ways to get rid of SIM-Lock, this is perhaps the most effective.
  • Contact your telecom operator. The user is finally able to write a letter to the provider whose SIM card the iPhone is locked to and ask for an official unlock. This method has many disadvantages: Firstly, you will have to wait quite a long time for the operator’s reaction, Secondly, you need to write in English and preferably without the help of the “clumsy” Google Translator, Thirdly, you will also have to pay for the official unlock. The cost of unlocking ranges from 1 thousand rubles (AT&T) to 15 thousand rubles (Finnish company DNA).

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

Firmware problems

The fact that the Apple gadget does not see the SIM may be the result of an iOS software glitch, which caused the firmware of the cellular modem to fail. To identify such a malfunction without having special equipment at hand, it won't work. However, if the user tried to install several cards into 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 your iPhone.

To replace the firmware, you must use iTunes. The user needs to connect the gadget to the PC, go to the device management menu (1) and click on the “ Restore iPhone..."(2).

iTunes will download it itself the latest official firmware 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 the appropriate firmware on the Internet (IPSW file format) and download it to the mobile device by pressing the combination “ Restore"(in iTunes) + Shift (on keyboard).

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

If flashing the firmware did not solve the problem with the SIM, most likely the iPhone is broken.

iPhone failure

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:

  • Device dropped and other mechanical impacts on it can cause failure of the SIM reader mechanism.
  • Using low-quality memory leads to a short circuit. The short circuit, in turn, causes burnout of diodes, resistors and other small components.
  • Pouring. It is worth checking the humidity sensor: on the iPhone 4 it is located in the headphone and charging jacks, and on the newest devices - in the SIM slot. If the red dot is clearly visible, then the iPhone is “drowned”.

Image: applekayseri.blogspot.ru

If the user inserts the tray carelessly into the iPhone, this may cause a malfunction of the SIM card slot. There is only one way to fix 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 things worse. Only specialists from service centers who have professional equipment at their disposal can accurately diagnose a breakdown and correct it correctly.

There is no need to worry too much about finances: given the modern, prohibitive level of competition, service centers set fairly loyal prices for their services. Replacing the SIM connector, for example, will cost the owner of an iPhone 1.5 – 2 thousand rubles.

Conclusion

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

Solving a problem is much more difficult than preventing its occurrence - and also 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 operational. It will be possible to fix the situation for free only if the problem lies in the SIM card.