How to switch between two numbers for one card of telecommunications, and how to switch numbers for

"One card, two numbers" service refers to the opening of two digital mobile ** numbers on a SIM card (two different sets of IMSI, ICCID and KI data are stored in the same STK card at the same time), and users can switch through the mobile phone menu operation to select any of the numbers to call, which meets the communication needs of users at different times and places using different numbers, and provides users with a personalized communication method. At present, the business mode can be divided into two types: the same place in the province and different places in the province.

The same place in the province refers to the two numbers of "one card and two numbers" for the same place in the province, and the two numbers of "one card and two numbers" in different places in the province belong to two different places in the province.

The specific operation method of switching between the two mobile phone cards of the dual-SIM dual-standby mobile phone is as follows:

First, open the phone's - settings menu page first, select - SIM card management.

2. In the "Default Settings Bar" under the SIM card management page, you can see that there is voice**, and the data connection is available for optional voice** settings.

3. Open it first - voice**Check on the pop-up board to switch to China Unicom, and after checking it for China Unicom, the next time you call**, you will use China Unicom to dial by default.

Fourth, also open first - the data connection is checked on the pop-up board to check China Unicom, after checking for China Unicom, the next time the mobile phone Internet consumption is to deduct China Unicom's tariff.

The so-called dual SIM dual standby means: the same mobile phone has two ** card slots, which can support two ** cards at the same time, calls, SMS and other services. And it is necessary to distinguish between dual-SIM and dual-standby mobile phones, because although some mobile phones can be placed with two ** cards, they belong to the ** mode of dual SIM single-mode, that is to say, only one ** card can be used, and the other is always in standby shutdown.

From the perspective of technical implementation, there are several dual-SIM schemes on the market. One is to use two sets of chipsets, that is, the mobile phone is equipped with two sets of baseband chips, radio frequency chips and memory systems, which is equivalent to two complete mobile phone motherboards together and placed in the same mobile phone shell.

The specific operation method of switching between the two mobile phone cards of the dual-SIM dual-standby mobile phone is as follows:

Phone model: Redmi 10.

Software Version:.

Tool: SIM card.

First, open the phone's - settings menu page first, select - SIM card management.

2. In the "Default Settings Bar" under the SIM card management page, you can see that there is voice**, and the data connection is available for optional voice** settings.

3. Open it first - voice**Check on the pop-up board to switch to China Unicom, and after checking it for China Unicom, the next time you call**, you will use China Unicom to dial by default.

Fourth, also open first - the data connection is checked on the pop-up board to check China Unicom, after checking for China Unicom, the next time the mobile phone Internet consumption is to deduct China Unicom's tariff.

Purchase advice. Clause.

1. Buy a mobile phone according to your own needs, the more functions the mobile phone has, the better.

Clause. Second, the main problems of the new mobile phone should be observed in time, because when the new mobile phone is purchased, some functions may not be activated. Especially for dual-SIM dual-standby mobile phones, we must see if dual-SIM can be used.

Clause. Third, after buying, the dual-SIM dual-standby mobile phone needs more maintenance, because the more functions, the more likely it is to have problems, including the function of the machine itself, but also due to improper human operation.

Telecom No. 1 dual SIM card can bring your ID card to the local business hall for processing, but only some** support this service.

One dual card, that is, one number has two ** cards, one is used for **, and one is used for wireless Internet access, and voice and data services are used separately, but combined billing.

The service is open to college students in Shanghai, and the tariff is more preferential than other telecommunications**, but it is only available to student users who have applied for the network access to the campus broadband of China Telesong Shanghai Company and Tianyi Campus Voice** and are still in normal use.

There are two types of prepaid and postpaid, but the tariff is the same, and it includes a certain number of SMS and some value-added services. In terms of data services, you can get 1GB of campus 3G Internet traffic and 60 hours of WLAN local Wi-Fi.

The telecom sub number is the main and secondary card business, that is, there are n mu trace telecom UIM cards, and there are n telecom numbers, but the use of one owner and n mobile phone cards does not affect each other.

One card double number is a telecom UIM card with two telecom numbers, one card double number can not be at the same time, you need to choose one of them, the other can only answer**can not call, you can switch when using.