Choose your guide:
Click on the Read SIM button to read the content of the original SIM card. The data will be read and you can choose which data you wish to copy. You can also manually change the ICCID.
You can switch the SIM card in the reader or choose a second connected reader with a writable SIM card.
When the writable SIM card is inserted, Write SIM button will be enabled. Wait until the process is done.
Cloned SIM card contains all information from the original card, so the phone doesn't notice any change. The phone will never register into any network with the cloned SIM card.