But the Bad Guys[tm] can jam the 3G communications and force the phone to 2G. The forcing is noticeable, but will be hard to distinguish a malicious fall-back

But the Bad Guys[tm] can jam the 3G communications and force the phone to 2G. The forcing is noticeable, but will be hard to distinguish a malicious fall-back to 2G vs. a carrier coverage fall-back to 2G. Ref: http://www.processor.com/editorial/article.asp?article=articles/P3223/36p23/36p23.asp&guid= http://www.processor.com/editorial/article.asp?article=artic... The exploit only works on 2G GSM networks; however it is possible to jam 3G signals and force virtually any GSM phone to negotiate a 2G connection.