How to completely clear the information of sim card?

Delete SMS, delete address book, delete phone records, etc.

1. Delete SMS: Open SMS application, select options or settings, and select SIM card information. In the short message list of SIM card, select the short message to be deleted and delete it. Please note that this will only delete the SMS on the SIM card and will not affect the SMS stored in the mobile phone.

2. Delete the address book: Open the phone's address book application or contact management function, and select the SIM card name in the address book or contact list. In the options of SIM phone book, select the contact to delete and delete it. Similarly, this will only delete the contact information on the SIM card and will not affect the contacts stored in the mobile phone.

3. Delete the call record: Open the call record application or dialing function of the mobile phone and select the call record option. In the call log list, select the SIM cartoon log and delete it. This will erase the call records on the SIM card, but it will not affect the call records stored in the mobile phone.