The exact circumstances around the search are not known. But activist Samuel Tunick is charged with deleting data from a Google Pixel before CBP’s Tactical Terrorism Response Team could search it.
I don’t think that matters as much as the delay because with brute force you can precisely go through a LOT of possibilities so the practical aspect is the attempt frequency. Even 1 number if it’s 1 attempt per decade is enough to prevent intrusion.
It also depends wha kind of password. I know some phones allow longer than 4 digits, and some offer alphanumeric.
I don’t think that matters as much as the delay because with brute force you can precisely go through a LOT of possibilities so the practical aspect is the attempt frequency. Even 1 number if it’s 1 attempt per decade is enough to prevent intrusion.