I'm glad I have an iPhone 6. Anything without touchID is now insecure thanks to the FBI. It sounds like Apple knew this would happen which is why they recently hired a Signal developer:
http://techcrunch.com/2016/02/25/apple-hires-developer-behin...
http://techcrunch.com/2016/02/25/apple-hires-developer-behin...
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.
This is a ridiculous game - the government is refusing to disclose exploits they found in our devices with our tax dollars. I can't see this ending well.