The number starting with 151 is the number segment of the mobile operator. 151 is one of the number blocks of China Mobile. It began to allocate numbers in 2008. It is also the fourth number block that does not start with "13" after the 158, 159, and 150 numbers. The purpose of opening the 151 block It is to alleviate the shortage of number resources.

China Unicom can replace cards in other places; China Unicom provides China Unicom's real-name customers with its own business halls in other places to handle card replacement services. You can go to China Unicom's own business halls to handle business. You only need to show the original ID card and service password, and then go through the system. After verification, you can replace the card.

China Unicom's DNS address is 210.21.4.130, and the backup DNS address is: 221.5.88.88. With the host name, don't memorize the IP address of each IP device. Just remember the relatively intuitive and meaningful host name. This is the function of the DNS protocol.

The number starting with 156 is a China Unicom number, not a China Mobile number; the starting numbers of China Unicom mobile phone numbers include 130, 131, 132, 155, 156, 175, 176, 185, 186, 166; the 170 number segment is a virtual operator exclusive number segment, you can look at the first four digits of the 11-digit mobile phone number in the 170 segment to distinguish the basic operator. Among them, "1700" is the resale number identification of China Telecom, "1705" is China Mobile, and "1709" is China Unicom.

The phone bill cannot be refunded, because the recharged phone bill is equivalent to the purchase of a virtual product, and virtual goods generally do not support returns or exchanges. This is due to the nature of the phone bill. Once the recharge is successful, the phone bill will be directly charged to the mobile phone account and cannot be revoked. In most cases, the phone bill is non-refundable. We remind everyone to carefully check the recharge amount and number when recharging phone bills to avoid recharge errors. If you encounter a problem and need to refund the phone bill, contact the operator promptly and provide relevant evidence and application so that the problem can be solved smoothly.

If the phone bill is charged incorrectly, it can be refunded. Users only need to apply in accordance with the operator's requirements and procedures and provide relevant information to obtain a refund. Detailed introduction: 1. If the user enters the wrong number or amount during the recharge process, he or she can apply for a refund from the operator; 2. If the user enters the wrong number or amount during the recharge process, he or she can call China Telecom customer service for a refund. Application; 3. If the user enters an incorrect number or amount during the recharge process, he or she can apply for a refund through the official China Mobile website or call customer service.

The number starting with 139 is the mobile number range. Other number ranges of China Mobile include 134, 135, 136, 137, 138, 139, 1440, 147, 148, 150, 151, 152, 157, 158, 159, 165, 170, 172 ,178,182,183,184,187,188,195,197,198.

You can call the 10001 customer service hotline. You can also edit content 101 and send it to 10001, or query it on the telecommunications business hall app interface. Applicable model of the tutorial: iPhone13 System: iOS15.2 version: Telecom Business Hall 8.7.0 Analysis 1 Dial the 10001 customer service hotline and check the phone balance by phone. 2Send the text message to 10001 and edit the content as 101 to check the phone balance. 3. Open the Telecom Business Hall app, enter your mobile phone number, get the verification code, and click to log in. You can clearly see the phone balance on the app homepage. Supplement: What is the number of China Telecom? 1 China Telecom customer service hotline: 10000. China Telecom self-service hotline: 10001. China Telecom 189 Email: 10