FBI iPhone hack limited to older models

The Federal Bureau of Investigation’s secret method for unlocking the iPhone 5c used by one of the San Bernardino shooters will not work on newer models, FBI director James Comey said.

“We have a tool that works on a narrow slice of phones,” Mr Comey said at a conference on encryption and surveillance in Ohio.

Mr Comey added that the technique would not work on the iPhone 5s and the later models iPhone 6 and 6s.