Telecom one card two, how to send text messages with the second number?

Using the second number to send SMS can be achieved by the following steps:

1. Open the phone settings, find the dual card settings, and click Open.

2. Find "Default Dialing Card" in the opened dual-card setting option, and click Open.

3. Check the "Default Dialing Card" option as "Not Set".

4. Open the Info App, click the blue color in the upper right corner, and select a new message (some mobile phones click "+"to create a new message, depending on the specific function of the mobile phone).

5. In the "New Information" page that pops up, enter the "recipient" to be sent, and a "major number/minor number" button will appear below.

6. Click this button, and select the card to switch in the pop-up menu below to switch the number to send SMS.

After the above steps are completed, you can send text messages with the second number.