What message can China Unicom send to know its phone number?

Unicom users can query local numbers through the following channels:

1. Use caller ID to dial other numbers or send text messages for inquiry;

2. Bring the owner's valid certificate to the local Unicom business hall for inquiry;

3. Dial the Unicom customer service hotline 100 10 with the local number, and verify the service password or owner information of the local number through the manual station for inquiry.