Can Unicom mobile phone number one be shared by the whole family?

You can use Unicom's small number service, that is, on the basis of your existing mobile phone number (main number), you can add one or more (up to four) mobile phone numbers (small numbers) without changing the phone or card, so that users can use different numbers to make voice calls and send and receive short messages with different people. In online shopping, take-away, intermediary and other contact scenarios, you don't need to use the main number, you can safely leave a trumpet, which effectively protects the private information related to the main number.