Apple ID Passcode Changed while the San Bernardino Shooter’s iPhone was in Government Custody. Feds left with no option to retrieve data from iPhone that belonged to San Bernardino shooter Syed Farook. Apple had been helping feds with the investigation since early January to provide a way to access Farook’s iPhone. One of those methods would have involved connecting the phone to a known wifi network. Apple suggested the feds an alternative way, i.e., Connect Farook’s iPhone to the Internet by taking it to known Wi-Fi range. This way his phone would have automatically backup device data with his iCloud Account.
Source: https://thehackernews.com/2016/02/iphone-apple-id-passcode-reset.html