Why does the mobile phone card show no service?

The mobile phone card shows no service because the mobile phone card is inserted incorrectly, the mobile phone card is damaged or expired, the mobile phone is in airplane mode or has no network coverage area, the wrong network operator or network mode is set, and the mobile phone software caused by problems or hardware failure. Detailed introduction: 1. The mobile phone card is inserted incorrectly. Take out the mobile phone card and then reinsert the mobile phone card to ensure that the card is inserted into the correct position and tightly connected; 2. The mobile phone card is damaged or expired. Replace with a new mobile phone card or contact us. The operator of the mobile phone card needs to be replaced; 3. The mobile phone is in airplane mode, etc.

#The operating system of this tutorial: ios16.6 system, iphone14 mobile phone.

The mobile phone card shows no service, which means that the mobile phone cannot connect to the mobile communication network and cannot make calls, send text messages, or surf the Internet. This condition can occur across a variety of phone makes and models, and can vary between regions and network operators. There are many reasons why the mobile phone card shows no service. The following will introduce several common reasons and solutions in detail.

1. The mobile phone card may not be inserted properly or inserted incorrectly. If the mobile phone card is not correctly inserted into the SIM card slot of the mobile phone, the mobile phone will not be able to recognize the card and will display no service. The solution is to turn off the phone, remove the mobile phone card, and then reinsert the mobile phone card, making sure that the card is inserted into the correct position and tightly connected.

2. The mobile phone card may be damaged or expired. If the phone card is physically damaged or has expired, the phone will be unable to connect to the network. At this time, you can try to insert the mobile phone card into other mobile phones. If other mobile phones also show no service, then it is likely to be a problem with the mobile phone card itself. The solution is to replace the mobile phone card with a new one, or contact the operator of the mobile phone card for replacement.

3. The phone may be in airplane mode or in an area without network coverage. If the phone is in airplane mode, it will not be able to connect to the network regardless of whether the phone card is normal or not. The solution is to take your phone out of airplane mode and search the web again. If the phone is in an area without network coverage, it will also show no service. The solution is to move to an area with signal coverage or wait for the signal to be restored.

4. The mobile phone may be set to the wrong network operator or network mode. If your phone is set up with the wrong network operator, it won't be able to connect to the correct network. The solution is to go into your phone's settings menu and select the correct network operator. If the mobile phone is set to the wrong network mode, such as selecting a 2G network but actually only a 3G or 4G network is available, it will also result in no service. The solution is to select the correct network mode, or set your phone to automatically select the network mode.

5. The mobile phone may have software problems or hardware failures. If the phone card is inserted normally and the settings are correct, but it still shows no service, there may be a problem with the phone itself. The solution is to restart the phone, update the phone's software version, or restore the phone to factory settings. If the problem persists, it may be a hardware failure of the phone and you need to contact the phone manufacturer or repair center for repair.

In short, the mobile phone card showing no service may be due to the incorrect insertion of the mobile phone card, damaged or expired mobile phone card, mobile phone in airplane mode or no network coverage area, wrong network operator or network mode settings, and mobile phone Caused by software problems or hardware failures. By checking the insertion status of the mobile phone card, replacing the mobile phone card, exiting airplane mode, selecting the correct network operator and network mode, and restarting the phone or updating the software, most problems with mobile phone cards showing no service can be solved. If the problem persists, it is recommended to contact the mobile phone manufacturer or repair center for further assistance. .

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