The FBI has asked Apple for help unlocking a pair of iPhones that belong to a mass shooter. Even though the agency has both devices in its possession, it is unable to get past the lock screen. Apple says that it will help the FBI in every way it can.
https://www.notebookcheck.net/FBI-asks-Apple-to-help-unlock-two-iPhones-that-belonged-to-a-mass-shooter.449488.0.html
This is all a show. You can bet that Apple does have backdoors, and this is simply a stunt to give you a false sense of security. Just like the Spectre and Meltdown vuls that we found all of a sudden.. yeah right. I am sure NSA has been using those for years....