Well, iOS does offer a hidden Field Test app that can surface a subset of this c... | Hacker News

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		sah2ed on June 4, 2014 \| parent \| context \| favorite \| on: U.S. Marshals Seize Cops’ Spying Records to Keep T... Well, iOS does offer a hidden Field Test app that can surface a subset of this cellular base station data. The code is * 3001#12345#* [1]. Tested on an iPhone 5S running iOS 7.1.1 that is not jailbroken. [1] http://www.cultofmac.com/128306/access-the-hidden-field-test...

schoen on June 4, 2014 [–]

Interesting! I'd imagine that the data from this app might identify some kinds of IMSI catchers, depending on how they're configured and how well the user knows what to expect in their local GSM environment.

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