I got an answer for this, well kinda.
Carry TWO phones, one a junk (maybe even inoperable) unit, leave it on your passenger car seat while you’re headed down the highway.
You see the flashing blue lights of Officer Not-So-Friendly?
Slip your working phone into password protect mode, slide it into your pocket, if questioned about it say “that’s my girlfriend’s phone, can you get into it? I think she’s been cattin’ around on me, I’ve already tried to get into it, but she’s got it password protected”.
Oh, that phone on the passenger seat? That’s mine, you wanna look at it?
FUOTSF!!
Argh, “FUOTSF” = “FUONSF”