FBI’s Intelligence Note suggests it is impossible to intercept iMessages between two Apple devices. FBI’s best advice for law enforcers is to “put an intercept on a non-Apple device” Department of Defense audit finds 15,000 unauthorized devices in use, and the army doesn’t even know where all its mobiles are, according to the report. Apple’s privacy policy would authorise the company to divulge information about customers to law enforcement when “reasonably necessary” or to “comply with legal process””]
Source: https://www.csoonline.com/article/2133186/fbi-highlights-imessage-encryption-issues.html