"The FBI has agreed to help prosecutors gain access to an iPhone 6 and an iPod..."
So yea, it's an iPhone 6.
http://www.latimes.com/local/lanow/la-me-ln-arkansas-fbi-pho...
So yea, it's an iPhone 6.
http://www.latimes.com/local/lanow/la-me-ln-arkansas-fbi-pho...
Touch ID ends up working like this, where your fingerprint takes the place of that simple passcode. But for people who don't want to use a fingerprint, you're stuck using the same passcode or passphrase for each unlock.
I'm guessing it's been well over 48 hours since the suspect last had access to this phone, so that would no longer apply.