What does the default voice number of Apple mobile phone mean?

refers to the mobile phone card number that users will give priority to when calling or texting.

According to the common skills website, Apple's default voice number means that users set a card as the default voice number on a dual-card dual-standby mobile phone. After setting, users will give priority to using this card for communication when making phone calls or sending text messages. The method for setting the default default voice number for Apple mobile phone is as follows:

1. Select the mobile phone settings and click on the cellular network;

2. confirm the default voice number and select a SIM card.