The phone always appears unplugged in What is the reason why the phone shows that the card is not in

The phone always shows no SIM card, the possible reasons are as follows: Reason 1: It is the poor contact between the SIM card and the slot.

It's the phone's slot that's having a problem with the electrical performance. Solution: It is best to send the phone to the repair station to test it, generally speaking, replacing the parts of the slot can solve the problem.

Cause. Third, there is a bug in the mobile phone software. Solution: Try to update to the latest version of the mobile phone system software first. To learn more about service offers, click on the "****" customer service 95 below to answer for you.

Hello, please pull out the mobile phone card and use the eraser to wipe the metal parts of the mobile phone card, and then install the mobile phone card into the mobile phone to see if it is back to normal.

If your phone can't read the card or the SIM card can't be detected, there may be one of the following situations:

1. The contact between the metal contacts of the mobile phone card and the mobile phone is insufficient.

Second, the mobile phone card is damaged.

3. Whether the location is a signal blind area or suddenly no signal.

Fourth, you can try to put the card on other mobile phones to try, and judge whether it is a problem with the card or the mobile phone through the method of changing the card and changing the phone.

If the SIM card icon does not recognize appears in the status bar above your phone, it means that your SIM card is not recognized, please follow the steps below to rule out whether the SIM card is recognized

1.Please restart your phone and try.

It is recommended that you restart your phone and let your phone re-read the "SIM card" before trying.

2.Please observe whether the SIM card looks good or not.

1) Observe whether the metal surface of the SIM card is dirty, clean the dirt on the surface of the SIM card, and avoid poor contact that causes the SIM card to be unrecognized.

2) If you are cutting your own SIM card, it is likely that the SIM card cannot be recognized due to the non-standard shape of the SIM card and loose installation in the card tray, resulting in poor contact. It is recommended that you bring your ID card to the nearest operator's office to change the standard SIM card.

3.Please test whether the SIM card can be used normally.

If your SIM card is not recognized on other mobile phones, or if other SIM cards are recognized on your mobile phone, it is likely that your SIM card is malfunctioning, and it is recommended that you bring your ID card to the nearest operator's business office to replace the standard SIM card.

4.Please check if the SIM card is placed in the corresponding card slot.

Some mobile phones only support a single SIM card, the inside of the card tray is the NM card slot, and the outside is the SIM card slot, please refer to the logo on the card tray frame to put the card, the SIM card and the NM card will not be recognized if the card is placed incorrectly.

If the problem persists after attempting the above methods, we recommend that you back up your data in advance (third-party applications such as QQ and WeChat must be backed up separately) and bring the relevant purchase voucher to a Huawei customer service center near you.

Make an appointment for service. Boarding service.

Repair spare parts** inquiry.

What is the reason why the phone shows that the card is not inserted, hello! The mobile phone has a card inserted, and the boot shows that the card is not inserted may be due to the following reasons: Reason 1:

The card slot is not clean or the SIM card and the card slot are in poor contact. Solution: First find some clean brushes or glasses cloth to clean the SIM card and card slot, and then you can glue some pieces of paper on the back of the SIM card to increase the actual thickness of the SIM card, so that the SIM and the card slot are tighter.

Reason 2: There is a problem with the electrical performance of the slot of the mobile phone. Workaround:

It's best to send the phone to the repair station to have it tested, and generally speaking, replacing the parts of the slot can solve the problem. Cause.

Third, there is a bug in the mobile phone software. Hope it helps!

The possible causes are as follows:Reason 1: The card slot is not clean or the SIM card and the card slot are in poor contact.

Solution: First find some clean brushes or glasses cloth to clean the SIM card and card slot, and then you can glue some pieces of paper on the back of the SIM card to increase the actual thickness of the SIM card, so that the SIM and card slots are tighter.

Reason 2: There is a problem with the electrical performance of the slot of the mobile phone.

Solution: Send the phone to the repair station for testing, generally speaking, replacing the parts of the slot can solve the problem.

Cause. Third, there is a bug in the mobile phone software.

Solution: Try to update the phone system to the latest version of the phone system software.

Please note when using a smart SIM card:1. Do not bend the card, and the metal chip on the card should be carefully protected.

2. Keep the metal chip clean and avoid contamination with dust and Egyptian chemicals.

3. In order to protect the metal chip, please avoid frequently withdrawing the SIM card from the mobile phone.

4. Do not place the SIM card in an environment where it is more than 85 or lower than -35.

5. Before taking out or putting in the SIM card, please turn off the power of the mobile phone.

6. When the mobile phone has a low power warning, please turn off the mobile phone and replace the battery.

7. The SIM card must be stored in a dry and ventilated environment to avoid rusting of the chip.

1) Check the SIM card insertion.

2 Let's talk about the simplest reason first, check whether the SIM card is reversed, if it is reversed, the mobile phone will definitely not be able to read the SIM card, then we need to reinsert the SIM card in the correct way.

3 (2) Check to verify whether the SIM card is broken.

4 Change to a normal mobile phone, put the SIM card on another mobile phone that can be normal, and see if the SIM card can be recognized, if someone else's normal mobile phone cannot recognize the SIM card, then the SIM card is broken.

5 (3) Verify whether the phone is broken.

6 Go and get a SIM card that can be used normally in someone else's mobile phone, and put it on the mobile phone that does not recognize the SIM card, if the normal SIM card cannot be recognized, then it means that some parts of the mobile phone are broken, it may be a hardware problem, or a software problem, which needs to be analyzed in detail.

7 (4) Check whether the SIM card slot of the mobile phone is loose.

8 For some people who do mobile phone product sales, they may often need to unplug and unplug the SIM, which is easy to cause poor contact of the SIM card, for this kind of problem, we can first press down the metal fixed shampoon on the SIM card before loading the SIM, and after loading the SIM card, gently press it again, or move the SIM card back and forth.

9 (5) Check if the SIM card slot of the mobile phone is broken.

10 For some SIM card slots that are not of good quality, if you often pull out the SIM card, it may make the SIM card slot bad, so that we can identify the SIM card on the normal mobile phone, and the other normal mobile phone SIM can not be recognized on our mobile phone, then the SIM slot may be really broken, and can only be sent for repair, and then further determine the reason.

11 When we encounter the situation that the SIM card of the mobile phone cannot be read, we don't need to be too nervous, we can check the situation of the SIM card of the mobile phone first, to see if the card is wrong, or because the SIM card is broken, of course, it may be because the mobile phone is broken, etc., you can check according to some of the methods sorted out above, I hope it can help you. Of course, if it really can't be solved, we can also try to consult the front desk staff at the business hall and ask them for help.

If it is, there is a problem with the card, just change a card, if the other phone is fine, the mobile phone card slot may be in poor contact, this should be taken to repair it.

It may be that it is not put away, or the card cannot be read and is not magnetic.

Shut down, take out the SIM card and reassemble it;

Check whether the network of the same operator of the surrounding mobile phone is normal, and determine whether it is a network fault.

It may be that the signal is not good, it may be that you have not inserted it correctly, and it may be that your mobile phone card has been cancelled, but a large part of my mobile phone card shows that the card is not inserted is that you have not inserted the card properly.

First, check if the mobile phone card slot is damaged? Second, it has been implemented for several years to replace the card in other places.

Is it worth running to Guangzhou for a Guangzhou card, it may be that there is a problem with your mobile phone, you can try it with another mobile phone.

It may be that the contacts of the card slot are not in good contact, and it is recommended to clean up the dust; It is also possible that the reason for the customized machine is that it can only support the SIM card of one operator, and the other two carriers do not.

The same type of card (such as two telecom cards) cannot be used in the same mobile phone at the same time

You can restart it and give it a try.

Take a Huawei phone.

For example, if the mobile phone card shows that the card is not inserted, there are many reasons, and it may be a SIM card.

The surface is dirty, and it may also be caused by the SIM card itself, or the selected network operator of the mobile phone is not automatically turned on.

The solution to the mobile phone card showing that the card is not inserted is relatively simple, and the specific processing methods are as follows:

1. If the mobile phone card shows that the card is not inserted, you can try to take out the SIM card and insert it again.

2. Under normal circumstances, you can also restart the phone to try;

3. If the surface of the SIM card is dirty, you can clean the SIM card and try again;

4. If the mobile phone card shows that the card is not inserted due to the problem of the SIM card itself, it is recommended to contact the operator to replace it.

If the phone's selected network operator is not automatically turned on, open "Settings", click "Select Operator", and check whether the "Automatically select network" switch is turned on.

This answer applies to most brands of mobile phone models such as iPhone, Huawei, Xiaomi, OPPO, etc.

Hello, I am helping you to inquire about the relevant information and will reply to you immediately.

1. Whether the SIM card is not in sufficient contact with the metal contacts of the mobile phone;

2. Whether the SIM card is damaged;

3. If it is a dual-SIM phone, please check whether the SIM card is activated;

4. If it is invalid, it is recommended to try to replace it with another SIM card to rule out whether it is a SIM card.

I hope I can help you, if you are satisfied with my service this time, please give me a thumbs up! Have a great day!