What are the highlights of the super number service?

Hello, highlights of telecom super sub-card business:

1, a mobile phone can use two telecom mobile phone numbers without changing cards;

2. The primary and secondary numbers can make/receive calls and send and receive short messages respectively;

3, do not change the user's package discount, unified query charges;

4. The smart phone switches the primary and secondary numbers through the client to dial, view the messages/short messages of the secondary numbers, and personalize the secondary numbers.