Ziphone Imei — Change

The ZiPhone IMEI Change: A Deep Dive into a Dangerous Legacy Tool

United States

Under the Wireless Telephone Protection Act (18 U.S. Code § 1029) , altering or removing an IMEI is a federal offense. Penalties include up to 15 years in prison and fines of $500,000 or more. The FCC and FBI have prosecuted individuals selling IMEI-changing services.

Why Did People Use It?

Back in 2007-2008, there were legitimate reasons enthusiasts used this feature beyond theft: ziphone imei change

  1. Unlocking: The primary goal was often to carrier-unlock the iPhone. The IMI change was sometimes a side effect or a necessary step to bypass the carrier lock checks on the baseband.
  2. Fixing Corrupt Basebands: Early jailbreak methods were risky. Sometimes a botched unlock would corrupt the baseband, leaving the phone with no signal. ZiPhone could rewrite the seczone, restoring functionality, though often at the cost of changing the IMEI.
  3. Hardware Experiments: Modders and security researchers used it to test how the network handled cloned or modified hardware identities.

If You Bought a Blacklisted Phone Unknowingly:

  • Return it. Most consumer protection laws require the seller to provide a clean IMEI. File a chargeback or a police report for fraud.
  • Contact the original carrier. If you have proof of purchase (receipt from the original owner), they may remove the blacklist.

Publication

  • Presented at: Black Hat USA 2009 (and subsequently referenced in academic security literature).
  • Year: 2009

Carrier and Apple Blacklisting

If you somehow manage to change your IMEI to a number that belongs to another user, that user will lose service. When the carrier detects duplicate IMEIs, both phones are permanently blacklisted globally through the GSMA database. The ZiPhone IMEI Change: A Deep Dive into