[smsm42]

"Here's my unlocked phone, officer!" - "There are no calls, emails or any history in this phone. Are you claiming you have not used this phone to call anybody or interact with any social media?" - "Yes, officer, I never did!" - "Excellent, here are records from your phone company, showing this phone ID making $CRAPTON of calls, and here are records from social media companies showing the IP assigned to this phone accessing your accounts. You just lied to a government agent, and we have a proof of it right here with us, we don't even have to do any work for it. Welcome to hell!".

Or, if you get smart - "Oh yes, officer, I did, but I just reset this phone this morning, because I forgot the password!" - "Too bad, but then you won't object us seizing this phone for further investigation, given that there's nothing on it. There's nothing on it, right? No tricky OSes, no double partitions, no secret codes, nothing like that?" - "Oh yes, officer, absolutely nothing like that!" - "OK, our forensic team would be glad to hear that". In a week: "Our forensic team discovered the presence of Hide My Real Data Super Secure Double Password Toolkit on the phone. You have lied to a government agent and now are under indictment for it. Welcome to hell!".