Mobile Phone Cloning

Published on Apr 02, 2024

Abstract

Usually this is done for the purpose of making fraudulent telephone calls. The bills for the calls go to the legitimate subscriber. The cloner is also able to make effectively anonymous calls, which attracts another group of interested users.

Cloning is the process of taking the programmed information that is stored in a legitimate mobile phone and illegally programming the identical information into another mobile phone. The result is that the "cloned" phone can make and receive calls and the charges for those calls are billed to the legitimate subscriber. The service provider network does not have a way to differentiate between the legitimate phone and the "cloned" phone

HOW IS CELL CLONING DONE?

Cloning involved modifying or replacing the EPROM in the phone with a new chip which would allow you to configure an ESN (Electronic serial number) via software. You would also have to change the MIN (Mobile Identification Number). When you had successfully changed the ESN/MIN pair, your phone was an effective clone of the other phone. Cloning required access to ESN and MIN pairs. ESN/MIN pairs were discovered in several ways:

Sniffing the cellular

Trashing cellular companies or cellular resellers

Hacking cellular companies or cellular resellers

Cloning still works under the AMPS/NAMPS system, but has fallen in popularity as older clone able phones are more difficult to find and newer phones have not been successfully reverse-engineered.

Cloning has been successfully demonstrated under GSM, but the process is not easy and it currently remains in the realm of serious hobbyists and researchers.

HOW TO PREVENT CELL CLONING?

Uniquely identifies a mobile unit within a wireless carrier's network. The MIN often can be dialed from other wireless or wire line networks. The number differs from the electronic serial number (ESN), which is the unit number assigned by a phone manufacturer. MINs and ESNs can be checked electronically to help prevent fraud.

.Mobiles should never be trusted for communicating/storing confidential information.

Always set a Pin that's required before the phone can be used.

Check that all mobile devices are covered by a corporate security policy.

Ensure one person is responsible for keeping tabs on who has what equipment and that they update the central register. How do service providers handle reports of cloned phones?
Legitimate subscribers who have their phones cloned will receive bills with charges for calls they didn't make. Sometimes these charges amount to several thousands of dollars in addition to the legitimate charges.

Typically, the service provider will assume the cost of those additional fraudulent calls. However, to keep the cloned phone from continuing to receive service, the service provider will terminate the legitimate phone subscription. The subscriber is then required to activate a new subscription with a different phone number requiring reprogramming of the phone, along with the additional headaches that go along with phone number changes.

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