The iPhone mobile card shows no service

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.

1. First check whether there is a problem with the mobile phone card, insert another mobile phone card, and detect whether the mobile phone card cannot be used, resulting in no service for the mobile phone;

2. If there is no problem with checking the phone card, find and open the settings on the iPhone, as shown in the figure below;

3. Find the airplane mode option in the settings, click the button on the right, wait a few seconds and then turn it off, as shown in the figure below;

4. If the iPhone still shows no service, find the general option on the settings page and click to open, as shown in the figure below;

5. Scroll down to the end of the general page and select the restore option, as shown in the figure below.

6. Find the restore network settings on the restore page, enter the boot password, and the restore will be successful, as shown in the figure below;

Notes:

I can't solve it through these, so I can only go to the mobile phone store for repair.

There are many reasons for the mobile phone card to have no service, the general reason is that the mobile phone card is not plugged in, or it is in an underground garage or elevator and other places without signal.

button, wait a while, and then turn off airplane mode to see if it returns to normal.

How to solve the problem of no service on the iPhone.

Apple's use of China Mobile's card to show no service means that the mobile phone cannot receive the mobile signal at this time, because the mobile signal is too low at this time.

The steps to resolve the problem are as follows:

1. Take Apple 6 as an example, first tap the icon of the "Settings" app on your phone.

2. Then click the switch behind the "Airplane Mode" on this page to turn it on.

3. Then wait for a while on this page, and then click on this light again to turn it off, and then it will be reconnected to receive the signal.

Answer 1: If the mobile phone is in airplane mode, you need to turn off the airplane mode; 2. If the SIM card of the mobile phone is in poor contact with the shrapnel of the mobile phone card slot, you can remove the SIM card, wipe the golden surface of the SIM card with a cleaning cotton cloth, and reinstall it; 3. If the SIM card fails to reconnect to the search network and register after there is no signal in the network signal coverage area due to accidental reasons, you can enter [Settings] - [General] - [Restore] - [Reset Network Settings]; 4. If the SIM card is not registered in the network, you can insert this SIM card into another mobile phone, if it also shows that no service is the reason for the SIM card; 5. If the SIM card network operator's signal coverage is not available, you can change the location to an open area, and then check the mobile phone signal grid display.

If you see a message that says "Cellular update failed: iPhone won't be able to make and receive** or access cellular data until the update" after updating your iOS system or restarting your device, iOS diagnostics have detected a problem on your device that needs to be serviced.

"No Service" is displayed, the cellular network shows "Error", the device says "No Service", and the cellular network is displayed "Error" with "Need to update to use cellular data on this iPhone". As shown in Fig

Some versions of Pingguo phones do not recognize the network.

1.Unicom's policy does not allow the separation of machine cards (unlikely).

2.Because you gave too little information, I suspect that your phone is locked (you only need to unlock it in the super snow to not be able to hi me).

Word by word, just hope you solve)

Welcome your adoption Points are not important to me, the important thing is to be able to help you solve the problem, share your happiness, welcome to me.

Try to change the card, if you can, go to the business hall to replace your card, you can also check the network settings of your phone to see if the settings are correct or not.

Are you detached? Unicom's policy does not allow the separation of machine cards.

There is a lock on the machine just like that unless unlocked. Is it super snowy to install?