Why can only one mobile phone number receive short messages for dual-card dual standby?

1. Go to the app window and find the "Settings" item of the mobile phone.

2. In the "Settings" window, use the second item "SIM Card Settings" under the category of "Wireless and Network" to make relevant settings.

3. Click to enter the "SIM card settings" page. The switch at the top controls the dual SIM card, and the use of the mobile phone card is directly controlled through the correct switch. Click the switch, the status will change from 1 to 0, and the calling card will be deactivated. From 0 to 1, the calling card will be activated.

4. Click the card name directly to enter the card information modification page, and change the card name to your favorite name, which is impressive and convenient for distinguishing two SIM cards when dialing.

5. Return to the instant messaging settings page. There are three settings here: call, SMS and network data. When talking, the SMS setting is not significant, so it can be set by default.

6. The third data connection needs to be set correctly. My data connection settings here use China Mobile. If the settings are wrong, the mobile phone can connect to Unicom's second SIM card to surf the Internet, and my Unicom card will not handle the data package. It will directly deduct the expenses from the balance to offset all related data traffic expenses.