What if the phone does not see the SIM card?

The phone has become an integral accessory and helper in our lives. But sometimes we are frustrated with those or other breakdowns. Often, the phone does not see the SIM card. In case of such a malfunction, a message appears on the display of the cell-phone that it needs to be inserted. It can also happen when you are offline, if there is support for working without a SIM. How to be in this situation? First we need to understand why this happened.

What are the problems with the SIM card?

There can be many reasons. Home - a malfunction of the SIM card. This happens when it wears out or damages its contacts. Especially the big risk of this with frequent replacement of Sims, reinstalling it in different phones and devices. In this situation, you need to contact the cellular operator, he will replace you card.

It also happens that the phone does not see the SIM card, since it is "locked" under a certain operator. That is, it does not support the numbers of other companies. To cope with this problem it is possible, "zalochiv" the device under other operators. Not everyone understands how this procedure is done, it is better to find a service center.

The malfunction of the slot, in which the card is installed, is a very common situation. With her phone does not see the sim card. This also happens when the numbers are frequently changed, if the slot or the device itself is damaged. It is necessary to carry out the diagnostics and replace the part in the service center.

The phone does not see the SIM card even if the operating system or software (software) of the device is malfunctioning. This happens when the firmware is incorrectly flashed, and if the reinstallation is incorrect. How to fix this trouble? Do a reinstallation, you can restore the backup. If you can not manage on your own, then go to the service center.

Consider a series of faults in detail in order to know what to do in specific cases:

- The breakdown of the sim-connector (this card holder), which happens with inaccurate removal or insertion of a sim card when used improvised devices that can harm. In this case, the contact lobes can bend or break. Sometimes it is possible to replace such elements, otherwise a new connector is needed.

- The device also loses its card when the soldering is broken at the connector's terminals. The reason is, for example, the fall of the phone or also the impact of improvised means. Eliminates the breakdown of the soldering of the leads.

- Sometimes the elements of the circuit of the sim-connector circuit break down: resistors, capacitors, varistors. Moisture and shock - that's what makes it happen. It is necessary to replace all faulty elements.

- It happens that the elements of the strapping are terminated when the SIM card is changed or worn out. It is necessary to restore all the details according to the scheme. Contact the service.

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

1. Wipe the card contacts with an eraser, as they could oxidize or become dirty.

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

The man said that rubbing the sim card with alcohol helped. Just do it carefully! Each case should be considered individually, but do not worry, often the situation can be corrected!