To add a SIM card onto the trusted list, do the following:
- Once you’ve inserted the SIM card you want to add onto the trusted list, the smart phone will be locked. Enter the Anti-theft password to unlock it.
- A notification prompting you to add the new SIM card onto the list will appear in the top menu. Tap on the notification.
- Select Confirm to add the SIM card onto the trusted list.
- Enter the Anti-theft password for confirmation.
You can edit the trusted list whenever you like by entering a name for each SIM card or deleting a SIM card from the trusted list.
You can find out more about the Anti-theft and SIM cards here.