1. First, open the setting software of the mobile phone, click the "Dual Card and Mobile Network" function, and look for the SIM card of the secondary card in the page.

2. Secondly, click the secondary card to open the corresponding data card detail interface, and find and click the "Name Edit" option.

3. Finally, in the pop-up editing page, edit the name as needed, and click the "OK" option at the bottom to finish modifying the name of the secondary card.