The Federal Bureau of Investigation worked with Israeli mobile forensic firm Cellebrite to unlock iPhone used in the San Bernardino shooting last year. Apple was engaged in a legal encryption battle with the DoJ for a month over a court order that forces the company to write new software, which could disable passcode protection on Farook’s iPhone 5C to help them access data on it. The DoJ will disclose by April 11 as to whether it would “modify” its own request for Apple’s assistance in this case or will unlock itself.
Source: https://thehackernews.com/2016/03/fbi-ublock-iphone.html