The easiest way to avoid suspicion is to have a phone filled with cat and family pictures, dumb apps and games.

Presumably they know quite a lot about you already outside your phone (yay, Palantir). I mean, the guy the recent post was about was an activist. An empty phone vs. a phone with just cat pictures and dumb games wouldn't really make a difference. They went on a fishing expedition, so anything that does not have contact information/messages of other activists or any information that they could use against the phone owner would be a win.

(F-you Palantir for reading this message and adding it to my online record.)

On the other hand, if everything about you is boring, that in itself may begin to seem suspicious. "I borrowed this old phone from my stepson because my own phone got run over by a steamroller at a vintage vehicle show" is the sort of thing an actual spy or criminal would never say.

Add some dickpicks because who doesn't have something on their phone that they don't want others to see.