Is the card broken if the mobile phone has no service, and what is the problem with the mobile phone

What model of mobile phone do you have?

If there is no signal on your phone, we recommend that you try the following steps:

1. The network mode selected by the mobile phone is not covered in the local area, it is recommended to change the network mode (Settings - General - Mobile Network Data Network), choose 2G, or 4G 2G, 4G 3G 2G comparison;

2. Try to re-insert or replace the SIM card to eliminate the SIM card failure.

3. The location of the mobile phone belongs to the area with weak signal coverage or the area with alternate signal coverage, it is recommended to restart the mobile phone and change the location of use;

4. There is strong magnetic field interference in the use environment of the mobile phone, compared with other mobile phones.

If none of the above methods can solve your problem, please bring the purchase invoice, warranty card and mobile phone to the nearest OPPO customer service center for testing and processing.

If the mobile phone has no network and the mobile phone encounters this situation, it is generally recommended to perform the following steps to troubleshoot and deal with it:

1.Try to replug the SIM card.

2.Try to change the geolocation.

3.Try to change another SIM card.

4.Back up your data (contacts, messages, **, etc.), factory reset attempt.

If the problem persists, it is recommended that you bring your mobile phone, purchase invoice, and repair card to the local after-sales service center for testing.

Mobile phone communication is to send and receive signals through the network base station, and then communicate with the called party, such as the mobile phone shows no service may be related to the following conditions:

1. The SIM card of the mobile phone is in poor contact with the shneme of the mobile phone card slot, resulting in the failure of the SIM card circuit and the inability of the mobile phone to communicate with the network base station.

2. The mobile phone is incompatible with the system due to the application software for installation, resulting in the system software closing the modem in the mobile phone signal processing circuit, at this time you can turn off the mobile phone and then restart, the modem in the mobile phone signal circuit will be restarted, and after the signal is normal, delete the suspicious mobile phone application software installed before the problem.

3. The SIM card of the mobile phone is not registered in the network, at this time, you can insert this SIM card into another mobile phone, if it also shows no service as the reason for the SIM card.

4. If the SIM card of the mobile phone is accidental, and there is no signal in the network signal coverage area, it fails to reconnect to search the network and merge the book, at this time, you can manually search for network registration under the menu of Settings - General - Network - Network Operator.

5. If the signal coverage of the mobile phone SIM card network operator is not available, you can change the location to an open area, and then check the mobile phone signal grid display, if the display is normal after changing the location, you can call the network operator service ** for feedback and complaints.

6. **The card has been used for too long, and with a valid certificate, you can go to the local business hall to reapply for a card.

If the card is placed on another phone, it is good to use. It's not easy to put on your phone. That's when the phone is broken.

You can do a factory reset to see if it's a problem with the software.

If it doesn't work, the hardware is broken.

It's time to get your phone repaired.

Generally, this is a problem with the card slot.

There may be many reasons why the mobile phone card can not find the signal: 1, the mobile base station problem 2, the mobile phone system problem 3, the mobile phone card problem, so for the above three problems, it is recommended that you first check whether the surrounding friends use the mobile phone signal, if other people's mobile phones also have no signal, it may be the local network base station problem, it is recommended that you contact the local business hall to deal with it, and then use your mobile phone to plug in other friends' mobile cards to try, if you plug in other cards will not work, then it may be a mobile phone system problem, It is recommended to contact the mobile phone after-sales service, if the plug in other cards are signal, just plug your own card is not good, then it may be a problem with your own card, it is recommended that you take the mobile phone card to the local mobile business hall to test, ask questions.

The phone is not broken, the card is not broken, this card is good to put in other mobile phones, and the cards of other mobile phones are also easy to use in this.

That's the problem with the card.

This caine should have been in bad contact with this mobile phone.

The shape of the card has changed very slightly. As a result, the phone card slot cannot be reached.

Questions. I haven't asked before.

Title. You add some pieces of paper to the side of the phone card that doesn't have a chip and make it tighter.

Try it on the plug.

This can only be a slight deformation of the SIM card or card slot. It's incompatible.

Questions. It's still not good.

Then you can only go to the mobile phone store or business hall to deal with it.

Let's go to the mobile phone store to see the specific situation.

Hello, the mobile phone is not broken, the SIM card is not broken, but the mobile phone has no service for the following reasons: 1. The signal in the current area is poor, resulting in no service for the mobile phone. 2. Due to mobile phone reasons, it is recommended to turn on the airplane mode and turn it off, search for the network again, or restart.

3. If the SIM card core is worn, pull out the card and reinstall it.

Hello, you try this method.

The solution to the lack of service due to mobile phone reasons is as follows: 1. In the main menu, swipe the screen from bottom to top to open the "Control Center" according to the direction pointed by the arrow. 2. After opening the "Control Center", click the "Aircraft Icon" in the red box pointed by the arrow.

3. After clicking the "Airplane Icon", the airplane mode will be turned on. 4. At this time, the signal bar of the main menu shows "no service". 5. After turning on the airplane mode, click the "Airplane Icon" in the red circle again to turn it off.

6. After turning it off, wait for the mobile phone to automatically search for the network, and then the signal of the mobile phone signal bar at the top of the screen will return to normal.

Questions. <>

I can't find the main menu, teacher.

Sorry for not seeing your message now.

You click on that airplane mode.

In such a situation, you can take off the mobile phone card, then wipe the metal piece, try to plug it in again, or try to insert it with another mobile phone card to see if it is a problem with the mobile phone card slot.

There is no service for the mobile phone, it should be that the network connection is not responding, considering that the mobile phone accessories are damaged, you can go directly to the repair point for repair.

Check if your phone is faulty. Insert a different SIM card into your phone and see if it can read the SIM. If not, it may be that the card slot is broken, or there may be a problem with the mobile phone system.

Don't rush to the repair shop just yet, try the following methods and see if it can be solved. Upgrade your phone's system. Go to Settings to see if your phone is up to date, and try to upgrade the version first.

If the card is not broken and the phone is still service-free, you check if you have installed it correctly.

Then look at the network settings on your phone.

Whether it's airplane mode or not.

If the mobile phone has no service, try to change the place, change the signal, the same place, and then continue to use it, it may be that the local signal is too poor.

If you say that your card is not broken, but the mobile phone is not serviced, it may be that one of your areas is too remote and the Internet is not yet available.

This may be a problem with the phone itself, such as not being in the service area and the signal is not good. It could also be that there is a problem with the card slot.

1. It may be that the mobile phone card is in arrears;

2. Degaussing of mobile phone card; (You can try it with a different phone).

3. Caused by loose mobile phone card slots. (You can change the mobile phone to try) 4. The current network signal is not good; (If the signal of your friends is not affected, it means that it is not the current network signal problem).

5. Mobile phone setting problems. (For example: airplane mode or turn off the card.) ）

What's going on with no signal and no service on Huawei phones? Is the SIM card broken?

1. Check the operator**.

Please check the status of your SIM card** and make sure that the SIM card is not in arrears or cancelled.

2. Confirm whether to use third-party magnetic or metal accessories.

Check whether you use metal protective shells, magnetic protective shells, magnetic brackets and other accessories, metal and magnetic materials are easy to interfere with signal reception, it is recommended that you remove the accessories to view.

3. Check whether the current environment covers the operator's network.

If you are in a closed indoor environment (such as a basement, elevator, etc.), the mobile phone signal may be blocked, resulting in no signal, and you can go to an outdoor environment to check. If you are in a relatively remote area and may not be covered by the operator's network, you can determine whether it is the cause of network coverage by using the mobile phone signal of the same operator's Duan Tongzai network in the surrounding area.

4. Check the SIM card and perform cross-card verification.

Observe whether there is dirt or oxidation on the metal surface of the SIM card, and check it after cleaning. If you use a tailor-made SIM card, it is recommended to replace it with a standard SIM card. Install the SIM card into other mobile phones that support this card for comparison test, if there is no signal, it is recommended that you consult the operator for processing.

5. Confirm whether the mobile phone supports the corresponding operator's mobile phone card;

6. Reset network settings.

Go to Settings - System Management - Backup & Reset - Reset Network Settings - Select the corresponding SIM card - Reset Settings, and then use View.

Note: Resetting network settings resets Wi-Fi, mobile data, and Bluetooth connection records.

7. Service center testing.

If the above methods fail to solve your problem, please back up your mobile phone data in advance, bring your mobile phone and purchase voucher to the vivo customer service center for testing, pay attention to WeChat***"vivo" or "vivo customer service" to inquire about the service center address**, it is recommended to contact before going to ensure that there is a staff reception before going to the past, so as to avoid delaying the precious time to run in vain.

SIM card. The signal display is strongly related to the network environment, if you are using a Huawei phone.

When your phone's status bar shows no service, we recommend that you try to resolve it by taking the following steps:

1.Please check the SIM card.

1) If your mobile phone card is a manually cut card, it may cause signal problems due to non-standard shape and poor contact, so it is recommended that you bring your personal ID card.

Go to the operator's business hall to apply for a standard mobile phone Boqiao Rock Card.

2) Dirty or oxidized SIM cards will also lead to poor contact, so it is recommended that you keep the SIM card clean.

2.Please avoid exposure to metal or magnetic materials.

interference. If your mobile phone uses a special metal protective case, or you are in an elevator, car and other environments, it is recommended that you remove the mobile phone protective case or leave the elevator, car and other environments, metal and magnetic materials are easy to interfere with the signal, resulting in no service for the mobile phone.

3.Please rule out network causes.

1) Make sure you are in a good environment.

In some more enclosed indoor environments, such as in densely spaced buildings, mobile phone signals may be blocked, resulting in no service.

The degree of network coverage of carriers varies according to different regions, and some areas may have insufficient coverage capacity, resulting in no mobile phone service.

If your phone is not available in a specific area, or if a nearby friend's phone with the same carrier** card is also not serviced, it may be caused by poor network quality in your location, and it can be restored to normal after changing to another location.

2) Please restart your phone or switch on airplane mode.

Special configurations of some networks may cause your phone to be out of service, which can be restored after restarting your phone or turning on airplane mode.

3) Please reset the APN

Open Settings, enter APN in the search bar at the top, tap Access Point Name (APN) to jump to the mobile data settings interface, tap Access Point Name (APN) again, then tap Three Dots or Four Dots in the upper right corner, and select Reset to Default Settings to try.

4) Please reset the network settings.

4.Please update your phone system to the latest version.

If your phone is still out of service, contact Huawei Consumer Service** (950800) for more assistance, or back up your data in advance (third-party apps such as QQ and WeChat need to be backed up separately), bring your purchase voucher, and go to a Huawei Customer Service Center near you.

Repair spare parts** inquiry.

Make an appointment for service. Boarding service.

It is very likely to buy a foreign version of the mobile phone, which only supports foreign mobile phone cards, and if you use a Chinese one, you need to use the designated activation tool.

The SIM card of the mobile phone is in poor contact with the shrapnel of the mobile phone card slot, resulting in the failure of the SIM card circuit, and the mobile phone cannot communicate with the network base station.

The card is not broken, the mobile phone card has no service, it is the mobile phone card that is not installed and there is no service, you take it out and put it again, make sure that it is put well, so that the problem can be solved.

Answer 1: It may be that there is a problem with the signal of the mobile phone, if you are in a relatively remote environment, such as an elevator, underground garage and other places, it may cause the mobile phone to not receive the signal, so that you can hear the other party's speech, but the other party cannot hear your own voice. Just move to the square or other place with a good mobile phone signal. 2. If the mobile phone card fails, there will also be no service.

Take out the mobile phone card installed inside, check if there is a problem, and if so, you need to contact the operator in time to replace it. In addition, you can also choose to put in another mobile phone card for checking. 3. The service system of the mobile phone is stuck, which will also lead to no service.

When the phone shows no service, you only need to turn on the airplane mode in the settings, wait for 10-20 seconds, then turn off the airplane mode and turn on the mobile phone service function again.

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