[Grimburger]

> why would keep anything on your phone that would incriminate you?

Plenty of things which aren't incriminating nor illegal, most people wouldn't want in the hands of others to peruse at leisure.

And the reason you would keep it on your phone is simple: Properly deleting data, encrypting then exporting it to a cloud storage provider, then reinstalling it on your phone is a massive pain in the ass to everytime you catch a flight.

Not to mention logging out and logging back in of all your services.

Like all things regarding security it comes down to hassle vs reward.

The commercial computer forensics software that Australian Border Force uses to image and scan your devices with retrieves deleted content by default, it searches for logins by default, it alerts them to your social media and does a bunch of stuff that is highly intrusive for the average person suspected of no crime but simply caught up in officers meeting their monthly targets.