The FBI says it has new data from Syed Farook's iPhone, and that new data is that there isn't any data, or at least no data that's of any use to the San Bernardino mass shooting investigation. The FBI is saying their analysis shows Mr. Farook didn't communicate with anyone during an 18 minute window that's unaccounted for following the shooting spree—something they should've known long before hacking into the phone. iCloud backups from the iPhone had been in the FBI's hands since early January, and agents had access to the device's phone carrier records, too. Critics to the FBI's...