I’ve written here previously about the Fifth Amendment implications (separate and apart from the Fourth Amendment ones) behind giving up your passcode to your phone so law enforcement may search it.
This is a fascinating tech article from the New York Timesthat discusses whether the feds really require the help of Apple when a suspect won’t (or can’t) give law enforcement the passcode to get into the phone.
You’d think law enforcement can get in anyway, which is an important point the author explores.
If law enforcement is asking (or telling) you to open up your phone pursuant to an investigation, stop.
You need a criminal defense lawyer.