How worried do I need to be about bringing my cellphone to the DEFCON hackers security convention? [more inside]
posted by y6y6y6 on Jul 28, 2009 - 31 answers

Asking for a friend: What is a very good technical text for understanding current and future wireless telephony standards, beginning with the basics about CDMA and TDMA and covering through 3G, LTE, LTE-Advanced, WiMax and beyond? [more inside]
posted by Pastabagel on Aug 19, 2008 - 2 answers

9-11 Technology Filter: I have never been able to even get signal on my Blackberry 8200 (GSM) within 10 seconds of liftoff, so how were cell phone calls completed from hijacked planes on 9-11? Specifically, given the prevailing handset, carrier, and tower technologies present in the Boston, NY, and DC metro and intervening areas at the time, and given the flight paths and altitudes of the hijacked planes, how were passengers able to complete cellphone calls to loved ones? [more inside]
posted by Pastabagel on Nov 30, 2007 - 20 answers

Will my Verizon CDMA 800 / 1900 phone work in China? [more inside]
posted by prettyboyfloyd on Dec 9, 2006 - 11 answers