What happens when the phone suddenly shows no service?

If you are using a Huawei phone and the phone shows no service, we recommend that you take the following methods to try to solve the problem:

1.Avoid using magnetic metal cases, magnetic stands, or magnetic chucks.

Metals and magnetic materials can easily interfere with the signal, resulting in poor mobile phone signals.

2.Please try to change to another SIM card.

It is recommended that you install other mobile phone cards into your mobile phone to view, if the signal display of other mobile phone cards is normal, it may be that there is a problem with your mobile phone card, it is recommended that you go to the operator's business office to replace a new mobile phone card.

3.Please try moving to your current location.

1) In some closed indoor environments, such as houses with dense spacing between buildings, the mobile phone signal may be blocked, resulting in poor signal. You can get outside to see if your phone signal is back to normal.

2) The degree of network coverage of operators varies according to different regions, and urban areas basically meet the coverage, but some remote areas may have insufficient coverage capacity, which will lead to poor mobile phone signal.

You can determine whether the poor mobile phone signal is caused by the current regional network coverage by whether the mobile phone signal is poor when you are only in the same area, or whether the mobile phone with the same carrier** card in the vicinity also has poor signal.

4.Check that the APN settings are correct.

Incorrect APN settings will affect the normal use of the network.

Method 1: aClick Settings;

c.Click on the APN name (APN) to go to the APN page.

d.Turn on the three dots button in the upper right corner;

e.Click Reset to default.

Method 2: If your phone is an EMUI and above or Magic UI and above, you can also follow the steps below:

a.Click Settings;

b.Tap Mobile network, then tap Mobile data;

c.Click on the APN name (APN) on the Mobile Data page to go to the APN page.

d.Turn on the three dots button in the upper right corner;

e.Click Reset to default.

Settings > Wireless & Networks > Mobile Networks > Access Point Name (APN) > turn on the three dot buttons in the upper right corner > reset to default.

5.Please try to reset the network settings.

If the above troubleshooting does not resolve your issue, we recommend that you contact Huawei Consumer Service** (950800) for further assistance, or back up your data in advance (WeChat QQ and other apps need to be backed up separately), and bring your purchase voucher to a Huawei customer service center near you.

In this case, the mobile phone signal is blocked and there is no signal.

You can try it back by turning it on again.

I went to repair the phone and said that there was a problem inside the phone. That writing outside must be fine. It's good to repair it.

1.If it's outdoors, in the basement, in an elevator, etc., this may be temporary.

2.If there is no arrears, you can turn on and off the airplane mode to solve the problem.

3.It could be a network setup issue.

1.The signal at the location of the mobile phone is weak, and there is even no signal base station nearby, resulting in the mobile phone not receiving the signal. As we all know, the mobile phones we use are sent and received through the signal base stations built by the operators in various places, and then connected with other mobile phone devices, but the market share of operators around the country is different, and the number of base stations built is also different, some remote areas and even the edge of the city, including our car through caves, bridges and other areas, the number of base stations is small or even no base stations, and the signal is very weak, so it is easy to have no signal, and the mobile phone will be displayed as no service. At this time, as long as you enter the area covered by the signal again, the connection will be automatically restored.

2.The SIM card of the mobile phone is not in good contact with the mobile phone card slot, if the mobile phone is violently vibrated or dropped, it is easy to cause this situation, we can remove the SIM card, and wipe the SIM card contacts and mobile phone card slot contacts with a cleaning paper towel or cotton cloth, and then reinstall it.

3.Mobile phone SIM card damage, this is a very accidental situation, the current mobile phone products on the market, hardware quality is very reliable, because of current and other reasons to burn out the mobile phone SIM card is rare, the author encountered this situation before or 3G era, in case of this situation, reinstall the SIM card or change the mobile phone experiment will show no service status, you need to go to the local operator service hall to reissue the mobile phone SIM card, and then you can resume use.

4.If the mobile phone is not in service after installing a certain software, you can try to uninstall the software, and then restart the mobile phone, at this time, the modem will restart, and automatically connect to the operator signal to restore the network.

5.Mobile phone motherboard problem,This is also a small probability event,As mentioned earlier,Now the mobile phones on the market are generally of high quality,Unless dropped or water,Hardware damage rarely occurs,You can try to enter on the button page:"*##"If the phone does not show the serial number, it means that the baseband of the phone is damaged and needs to be repaired.

If there is no service for the Unicom mobile phone card, there may be the following reasons:

1.The mobile phone card is not plugged in properly, and the contact is poor;

3.The mobile phone card, card slot or mobile phone terminal is damaged;

4.The status of the mobile phone card is abnormal (such as shutdown, closed account, etc.);

5.The mobile terminal does not support China Unicom.

Here are some things you can try:

1.Turn the phone on and off and restart it to test it;

2.Reseat the mobile phone card and check whether the card slot is loose or deformed.

4.Test whether the mobile phone card or terminal is faulty;

5.Verify that the status of the SIM card is normal;

6.Check whether the mobile terminal supports China Unicom.

If the above methods still cannot solve this problem, it is recommended to contact the local Unicom customer service or consult the official customer service of the mobile phone for understanding.

If your mobile phone cannot access the Internet normally, please check the following conditions:

1. After 3-5 minutes of power off, restart the phone and try again;

2. Confirm whether there is a network, it is recommended that you can use it in a place with a strong signal;

3. Check whether there is still a phone bill, if the balance is insufficient, you need to recharge before you can use it;

4. Check whether the USIM card is inserted, if it has been inserted but still cannot be used, it is recommended that you go to the business hall to check whether the USIM card is faulty, or replace the card for testing;

5. If the traffic usage reaches the maximum value in the current month, the network will be automatically closed, it is recommended that you pay attention to our SMS reminder or inquire about the **product description.

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

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

1.Make sure you are in a good network environment.

Try changing your current location.

1) In some more closed indoor environments, such as houses with dense spacing between buildings, the mobile phone signal may be blocked, resulting in no service.

2) The degree of network coverage of operators varies according to different regions, and some areas may have insufficient coverage capacity, resulting in no service for mobile phones.

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.

3.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.

4.Please restart your phone or switch on and off 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.

5.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 or four dots in the upper right corner, and select Reset to Default Settings to try.

6.Please reset your network settings.

7.Please remove 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 office to apply for a standard mobile phone card.

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

8.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.

Huawei Customer Service Center.

Repair spare parts** inquiry.

Boarding service.

Maybe the nearby signal is not very good, you can try restarting.

1. The mobile network standard is not supported.

If the SIM card is not serviced, it may be that the phone does not support the network support of the current SIM card. For example, if the mobile phone is not a full Netcom mobile phone, then the telecom card cannot be used. At this time, you can use it by replacing your mobile phone with a full Netcom mobile phone.

Second, the SIM card of the mobile phone is damaged.

You can try to put the SIM card in another phone, if it shows no service on other phones, it may be that the SIM card is damaged. At this time, you need to bring your ID card to the nearby operator's business hall and apply for a replacement card.

3. The status of the mobile phone card is abnormal.

If the mobile phone card has been cancelled or you have applied for a loss report, it will also show no service. You can call the carrier's customer service** through other mobile phones and ask the customer service if the status of the mobile phone card is normal.

It's that the cell phone network has no signal.

The mobile phone card shows that there is no service, it may be that there is no signal in the area temporarily, for example, when we are often in the elevator and underground parking lot, we often can't find the signal, at this time, you can choose to turn on the airplane mode, and then turn it on again to see if the signal can be found.

2. Restart your phone.

Sometimes it is because the application software in the mobile phone is incompatible with the mobile phone, so you can restart the mobile phone to try.

3. Take the mobile phone card out of the card slot, wipe the side of the mobile phone card with metal strips, and then put the mobile phone back in.

Sometimes it's the phone card that has poor contact, so it is reinstalled.

Fourth, wipe the mobile phone card, still no response, just change the mobile phone card to a card slot and try it.

If you try to change the card slot, but there is still no response, you can go to the mobile phone business hall to check whether it is a problem with the mobile phone card. Because some mobile phone cards can be damaged if used for a long time. Go to the business hall to replace the card.

5. Check whether the mobile phone card is in arrears.

6. Check whether the network settings in the mobile phone are correct, and whether the operator selection column is selected automatically.