The phone has become an indispensable accessory and assistant in our lives. But sometimes we are upset by certain breakdowns. Often the phone does not see the SIM card. With such a malfunction, a message appears on the display of the cellular device to insert it. It may also turn on offline if there is support for working without a SIM card. How to be in such a situation? First we need to figure out why this happened.
What are the problems with the SIM card
There can be many reasons. The main one is a SIM card malfunction. This happens when it wears out or its contacts are damaged. A particularly high risk of this is with frequent replacement of the SIM card, reinstalling it in different phones and devices. In this situation, you need to contact your mobile operator, he will replace your card.
It also happens that the phone does not see the SIM card, as it is "locked" under a certain operator. That is, it does not support numbers of other companies. You can deal with this problem by "locking" your 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 quite commonsituation. With it, the phone does not see the SIM card. This also happens when numbers are often changed, if the slot or the device itself is damaged. It is necessary to diagnose and replace the part at the service center.
The phone does not see the SIM card even if the operating system or software (software) of the device malfunctions. This happens with incorrect flashing, as well as with incorrect reinstallation. How to fix such a nuisance? Do a reinstall, you can still restore the backup. If you can't handle it yourself, then go to the service center.
Let's look at a number of faults in more detail to know what to do in specific cases:
- Breakage of the SIM connector (this is the card holder), which happens when the SIM card is inaccurately removed or inserted, when improvised devices are used that can harm. In this case, the contact petals may bend or break. Sometimes it is possible to replace such elements, otherwise a new connector is needed.
- The device also loses the card if the soldering is broken at the connector contacts. The reason is, for example, the fall of the phone or also the impact of improvised means. Breakage is eliminated by soldering the leads.
- Sometimes the elements of the sim-connector circuit strapping fail: resistors, capacitors, varistors. Moisture and shock is what causes this. All defective elements must be replaced.
- It happens that the strapping elements break when changing the SIM cardor wear out. It is necessary to restore all the details according to the scheme. 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 contacts of the card with an eraser, as they may have oxidized or become dirty.
2. Go to the operator and ask for a new SIM card.
The man said that wiping the SIM card with alcohol helped. Just do it carefully! Each case must be considered individually, but do not be discouraged, often the situation can be corrected!
