>>14148422The EMP commission's critical infrastructure report reports that cellphones were tested, but doesn't give exact numbers. They do say that "The analysis suggested that damage to telephones, cell phones, and other communications devices would not be sufficient to curtail higher than normal call volumes on the civilian telecommunications network after exposure to either low or high E1 EMP levels. " And that 2 days after the attack 21% of calls will be completed even in the regions exposed to the most intense fields. On page 154 they report that "Electronic equipment found on many of the mobile units also was tested. This equipment included a computer, personal data assistant, mobile and portable radios, defibrillators, and vital signs monitors. No permanent failures were experienced at levels up to 70 kV/m. Thus, we anticipate that the electronics in emergency services mobile units will continue to function normally, but they may suffer some initial effects due to latching upset of electronic devices." So computers and PDAs still worked. The main threat is to the power grid and other things which use long conductors, mobile stuff's more resistant.
http://www.empcommission.org/docs/A2473-EMP_Commission.pdf 
