The mobile phone is stuck but there is no signal, and it cannot be connected to the call network

If you have no signal issues with your phone, it is recommended to try:

2.If it is a dual-SIM phone, please check whether the SIM card is activated: Settings - SIM Manager - SIM1 SIM2 - Click the SIM card icon - slide to turn on (the operation mode may be slightly different for different models of mobile phones).

3.If there is still no signal, it is recommended to turn off the SIM card and remove it, wipe the SIM card chip with an eraser, and then reinstall it.

4.If it doesn't work, try to change to another location to rule out whether it is caused by poor signal coverage in your location.

5.Try to change the network mode to 3G or 2G (do not select the auto-connect mode). Note: Some machines do not support changing the network mode.

6.Try to change another SIM card.

7.Update your phone's system version: Settings - About Phone (About Device) - Manual Update Automatic Update (Software Update System Update - Update). Note: Please back up the data (contacts, messages, **, etc.) in your device before upgrading.

According to the information you provide, if you mean that the mobile phone cannot be used "without service", you can detect it in the following ways:

1.Please make sure your phone is not set to airplane mode;

2.Please confirm whether your mobile phone is in arrears;

3.You can go to a place with a better signal and turn it back on;

4.You can change the card on the mobile phone to try, or put the card on another mobile phone to try, if it can be used normally, it is recommended that you go to the business hall to test, if it still does not work, it may be caused by the mobile phone system, you can go to the mobile phone repair point to test the mobile phone.

The reasons why the mobile phone card has a signal and a network can not be connected are as follows:

1. Call restrictions are set in the call settings of the mobile phone.

2. It's just that you can't call back, it may be that the other party's number is forbidden to call back.

3. There is a signal problem with the mobile phone.

4. The mobile phone is installed with third-party network software.

5. The mobile phone card is faulty.

Here's how to fix it:

1. Check whether the phone is in airplane mode.

3. Check whether the mobile phone has enough balance.

4. Check whether the call restriction function is set: **-More-Settings-More Settings-Calling Hunger Restriction (you need to enter the password entered when setting call restrictions) Note: The operation path of different models of mobile phones may be slightly different.

5. Check whether there is a new version of the system, and try to update the system after backing up the data.

If the mobile phone card is suddenly unusable, check it as follows:

1. Whether the mobile phone is in arrears.

2. Whether there is a signal to move.

3. If you can't receive the signal, it may be that the card is loose, or the oxidation conductivity of the tentacles is poor, you can take out the card, insert the gold finger with an eraser, and then insert it into the mobile phone.

4. If there is still no signal, you can insert the card into other mobile phones for testing. If it's OK, it's a problem with the phone and needs to be sent for repair.

5. There is also a problem with the detection of other mobile phones, that is, the card is broken, and you have to move to change the card.

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

1. If you don't restart your phone after upgrading to 4G**, you won't be able to use the Internet function normally;

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 in the account, if the balance is insufficient, you need to recharge before you can use it;

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

5. 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;

6. 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.

1. Check your phone's settings.

Open the mobile phone Quick Center (scroll down at the top or scroll up at the bottom) to see if the data network is turned on.

2. Confirm the status of the mobile phone card.

Make sure that the balance of the mobile phone card is sufficient, if the payment is in arrears, please restart the key to burn the mobile phone after the recharge is successful. Check with your carrier to see if the data limit has been met or if the data network function is enabled. If necessary, you can change the SIM card that can access the Internet normally.

to confirm. 3. Check the mobile phone signal.

If your phone uses a metal, magnetic case or bracket that has an impact on your phone's signal, it is recommended to remove it and try it. If you are in an underground parking lot, elevator hall and other environments, the coverage of the mobile phone signal is susceptible to these environmental impacts, the signal will be relatively weak, and the data network will also be affected, it is recommended that you go to an open area, such as an outdoor open environment for testing.

4. Check the network permissions.

Please go to Mobile Phone i Manager - Traffic Management Traffic Monitoring - Network Management or Set Applications and Permissions - Permission Management.

Check whether the Internet access permission for the app is enabled.

5. Check the VPN (Virtual Private Network.

Please go to Settings - Other Networks and Connections - VPN, check and confirm whether the VPN is used, if so, it is recommended to turn off and try again.

6. Check the network settings.

Please go to Mobile Settings - Mobile Network.

SIM Card Information & Settings - Corresponding SIM Card ) - Access Point (APN) or Set Up Mobile Network Dual SIM & Mobile Network - Access Point (APN), tap"Reset to the default settings"restart your phone.

7. Re-search the network.

Please go to Settings - Other Networks & Connections and turn it on"Airplane mode"After turning it off, 5G phone.

Please go to Settings - Mobile Network, turn it off and on again"5G enabled"Options.

8. Reset the network settings.

Resetting the network settings will delete and disconnect the connection and pairing records of WLAN, mobile data network, Bluetooth and other networks, you can go to Settings - System Management - Backup and Reset - Reset Network Settings - Enter the lock screen password.

Note: 1. Enter the cloud service.

Data synchronization - Turn on WLAN, Bluetooth, etc. to synchronize data to cloud services.

2. Go to "Cloud Service" - Device Cloud Backup.

Backup data type.

Open "System Data" - return to the previous page - Back up now to back up some of the system settings data.

9. Reset all settings (do this when the user can't see the reset network settings menu).

Go to Settings - System Administration - Backup & Reset - Reset All Settings Go to Settings - More Settings - Backup & Reset - Reset All Settings and follow the on-screen prompts.

Note: Restoring all settings will not delete any data or media files, Regret Noise will only restore all settings of the phone, some third-party application accounts need to be logged in again, please confirm that it does not affect the use of the software before operating. For data security.

It is recommended to back up your phone data in advance before the operation.

1. Please avoid using magnetic metal protective shell chain celery, magnetic bracket or magnetic chuck If your mobile phone uses a metal protective case, magnetic protective case, magnetic bracket or magnetic chuck, it is recommended that you try to remove it, metal and magnetic materials are easy to interfere with the signal, resulting in poor mobile phone signal.

2. Please confirm whether to disable the SIM card, please search for and enter the SIM card management in Settings, and make sure the SIM card switch is turned on. Disabled SIM cards will cause the signal bar to show no signal (when a single SIM is inserted) or only one card to show a dead signal (when dual SIM cards are inserted).

3. Please troubleshoot the mobile phone card, it is recommended that you install other SIM cards of the same operator into your mobile phone to view, if the signal display 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 hall to replace the new mobile phone card. If your mobile phone card is a manually cut card, it may affect the reading of the signal due to non-standard shape and poor contact, so it is recommended that you bring your personal ID card to the operator's business office to apply for a standard mobile phone card. Dirty or oxidized SIM cards will also affect the reading of the signal, so it is recommended that you keep the SIM card clean.

4. Please rule out network reasons.

1) Try to change the indoor environment of the current location, such as in a house with dense spacing, the mobile phone signal may be blocked, resulting in poor signal. Carriers' network coverage varies depending on the region, and some areas may have insufficient coverage capacity, resulting in poor mobile phone signals. If your mobile phone has a poor signal in a specific area, or if a nearby friend's mobile phone using the same carrier** card also has a poor signal, it may be caused by the poor network quality in your location, and you can return to normal after changing to another place.

In some more enclosed indoor environments, such as houses with dense spacing between buildings, the mobile phone signal may be blocked, resulting in poor signal. Carriers' network coverage varies depending on the region, and some areas may have insufficient coverage capacity, resulting in poor mobile phone signals.

2) Please try resetting the APN

3) Please try to reset the network settings.

4) Please restart your phone or switch on airplane mode to try.

5. Please update the phone system to the latest version after trying, it is recommended that you update the phone system version in time. If the problem persists, we recommend that you contact Huawei Consumer Service** (950800) for more assistance, or back up your data in advance (third-party rollover applications need to be backed up separately), bring your purchase voucher, and go to a Huawei Customer Service Center near you.

1. There is no signal or the signal is relatively poor, mainly because the signal will be affected by various factors such as terrain, landform, and high-rise buildings in the process of propagation, such as the current location is in a relatively closed place, and the signal may be affected.

2. If the mobile phone signal of other China Unicom users is normal, the following methods can be used to troubleshoot:

Method 1] Turn on airplane mode, then turn off or restart your phone and try again.

Method 2] Test of changing the phone card to change the mobile phone card to the mobile phone of a family member or friend and try again.

Dear, you restart the phone first, it may be caused by the poor signal in the location, two, **card contact, **The metal chip on the card may be in poor contact with the phone, unplug the **card to clean the surface, three, turn on [airplane mode], turn it off after a few minutes;

Fourth, restore the factory settings, scroll down in [Settings] to find [System and Updates], select [Reset] in the middle, click [Factory Reset], tap [Reset Phone], and fifth, if it is a hardware problem, after-sales repair is recommended.

Question: My phone has a phone bill, does not display 4G, only H

It's always good to ask questions.

I can't ask a question.

It is recommended to check them all, **card contact, **The metal chip on the card may be in poor contact with the mobile phone, unplug the **card to clean the surface, three, turn on [airplane mode], and turn it off after a few minutes;

Fourth, restore the factory settings, scroll down in [Settings] to find [System and Updates], select [Reset] in the middle, click [Factory Reset], tap [Reset Phone], and fifth, if it is a hardware problem, after-sales repair is recommended.

If it really doesn't work, you can only go to a professional after-sales point to deal with it, which is more conducive to the use of mobile phones.

Ask a question, then I'll try.

Asking questions still doesn't work.

Unplug the ** card to clean the surface, reinstall it and turn on [Airplane Mode], and turn it off after a few minutes.

If it doesn't work, you will do a factory reset. If you try it all and can't do it, you can only go to a professional after-sales point and change the card.

There is no network, no signal, that is, your location in that place is not good, you can change the location will be better.

The network coverage in your location is not very good, the phone is down, or the phone is slow when it restarts.

2. Take out the SIM card and reinstall it.

3. Go to Hardware Detection to see if the SIM card is working properly. If the SIM status is normal, go to step 5, or if the status is unknown, go to step 4.

4. Try to replace a different SIM card, if the status is still unknown during hardware testing, it is recommended to go to the maintenance point for testing; If the detection status is normal, it is recommended to go to the carrier to replace a SIM card (the SIM card may be aging).

5. Whether the network type is correct and whether the operator selects whether it is automatic. (China Unicom selects 3G priority, mobile selects only 2G, and China Telecom selects automatic).

6. Check whether there is a signal for other mobile phones on the same network nearby.

7. Back up the data, flash to the latest system version and try again.

8. Call the operator** (China Mobile 10086, China Unicom 10010) to check the network status 9.

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

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 that there is no service as the reason for the SIM card.

4. If the SIM card of the mobile phone is accidental, and the network signal coverage area has no signal, it fails to reconnect to search the network and merge the book, at this time, you can manually search for the network registration front number cover 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.