What's the difference between a telecom secondary number and a card dual number?

1. Telecom Subnumber: It is the "one card with many numbers" service provided by operators. On the basis of not replacing the mobile phone and SIM card, users can add up to three real mobile phones as sub-numbers.

2. One card with double numbers: refers to opening two digital mobile phone numbers on a SIM card.

Second, the characteristics are different.

1, Telecom Subnumber: You can get one or more virtual numbers (that is, subnumbers) without changing your mobile phone and SIM card, and use the subnumbers to answer calls and send and receive short messages.

2. One card with two numbers: two groups of different IMSI, ICCID and KI data are stored in the same STK card at the same time, and users can choose any number to make calls through the menu operation of the mobile phone, which meets the communication needs of users using different numbers at different times and places and provides users with personalized communication methods. ?

Third, the business is different.

1. Telecom Subnumber: Subnumber can dial other users' numbers once or twice, or answer other users' calls. The real secondary number can answer all incoming calls, while the virtual secondary number cannot answer some incoming calls of Unicom, Telecom and Tietong numbers. The minor number can also send and receive text messages.

2. One card with double numbers: After the service of one card with double numbers is opened, the main number tariff will remain unchanged, and all kinds of value-added services can be ordered normally; Virtual numbers cannot subscribe to and use any value-added services, nor can they accept program-controlled functions and packages; Virtual numbers can't log in to the Internet lobby and the palm lobby.

Baidu Encyclopedia-Subnumber Service

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