How does Dalian China Resources Gas modify the user's mobile phone number?

Dalian China Resources Gas users can modify their mobile phone numbers in the following two ways:

1. Dial the number 9777 to make changes, and then follow the voice prompts after connecting. At first, the voice prompts you to select the language, then press the number keys according to the business to be operated, and then enter the phone number, which needs to be entered twice, and then change the phone number after it is correct.

2. Go to the Dalian China Resources Gas Service website, select "User Center", find "Personal Information Management", click "Mobile Number Management", and then change the mobile phone number.

Note: When changing the mobile phone number, you need to provide authentication information, such as ID number.