How to check whether the phone number is empty?

To check whether the phone number is empty, you can use the following methods:

1. Dial the mobile phone number: you can dial the mobile phone number. If the prompt says that the number is empty, the mobile phone number is empty.

2. Check the mobile phone number: You can enter the mobile phone settings and find the options about the mobile phone. You can see the mobile phone number in the card column. If "No Service" is displayed, the mobile phone number is empty. In addition, you can also use third-party software, such as Tencent mobile phone housekeeper and harassing phone interception.

3. Send SMS: SMS can be sent to the mobile phone number. If the prompt fails to be sent, the mobile phone number does not exist.

4. Online inquiry: You can inquire about the arrears of mobile phone numbers through the online business halls of major operators. If the arrears indicate that the mobile phone number does not exist.

5. Online query tools: There are many online query tools that can help users query the empty phone number online, such as Baidu and 360. Users only need to enter the number, they can query the attribution and status of the number, so as to judge whether the number is empty.

6. Number attribution inquiry: This is a common online detection method of mobile phone number vacancy, and it can be judged whether the number is a mobile phone number vacancy by inquiring the information of the number attribution. Because the mobile phone number often has no attribution information, or the attribution information is inaccurate, you can initially find the mobile phone number through the number attribution query.

7. Number status inquiry: The empty number of the mobile phone is often caused by the user's downtime or arrears. Therefore, by inquiring the status of the number, it can be preliminarily judged whether the number is empty. For example, if you find that the number is down or in arrears, it is likely that the mobile phone number is empty.

Please note that the above methods are different due to different operating systems, different calling card operators and different network environments, and each method cannot be guaranteed to be completely effective. For more up-to-date query methods, it is recommended to consult relevant technology or customer service personnel.