Similarly, if you’re in a situation where you cannot guarantee your phone’s security because it’s leaving your possession, and you’re sufficiently worried, again, power off fully.
Similarly, if you’re in a situation where you cannot guarantee your phone’s security because it’s leaving your possession, and you’re sufficiently worried, again, power off fully.
I'd travel with a different device, honestly. I can get a new-in-box android device for under £60 from a shop, travel with that, set it up properly on the other side, and then either leave it behind or wipe it again.
I chose it because it’s a mainstream provider (Nokia) readily available running a supported version of android (12).
If you want to install a custom rom, you can get an older flagship (galaxy s9) and flash it for about the same price.
My point is if your threat model is devices seized at border, then a burner phone is far more suitable for you than a reboot.
The advantage of a burner phone is that it can’t contain anything important, because you’ve never put anything important on it, or connected it to any system that contains important data. So it doesn’t really matter if it’s compromised, because the whole point of a burner, is that it’s so unimportant you can burn it the moment it so much as looks at you funny.
My wife works for the government in a low level role that involves some amount of travel to local authorities (other major areas in Scotland). She has a phone, and strict instructions to never carry it across the border ofmany countries (as a blanket policy). They’re told they’ll be provided a device for travelling and not to install any work apps on it. It’s basic security - don’t travel with information that you can lose control over.