The wireless industry has dealt with cloned phones for years, with older Authentication keys to newer IME with SIM cards. The information may reside on the phone RAM or on the SIM card. I am under the impression that SIM cards can be ported between cell phone manufacturers? So how can the SIM card be encrypted unless all cell phone manufacturers have the same encryption algorithms? In effect, a back door exists for SIM cards. Can't the cell phone RAM stored data be downloaded to the SIM card?