These are the ONLY SIMs that can be Cloned. Commonly available till June 2002, they have little protection. Reason: Better Reception like 3G & to thwart the efforts of Hackers & Cloners. The Hardware should be able to write to the EEPROM (or Programmable Memory) of the SIM.Įven though ALL Sims may look alike, the Software (Or in Technical terms: the EEPROM) has evolved (though Slowly) over the years. These “Writers” can ONLY insert SMS & Contacts. NOT the ordinarily available SIM Reader/Writer. ** There are Special considerations & Not All SIMs available, can be cloned. The phrase SIM clone is often used to refer to the SIM card that has been successfully duplicated. The secondary card can then be used in a different phone while having all calls and associated charges attributed to the original SIM card. When the cloning is completed, the cloned SIM card’s identifying information is transferred onto a separate, secondary SIM card.
SIM cloning is the process in which a legitimate SIM card is duplicated.