>I imagine backing up might not be as easy an option without tearing down the device as the memory chip is no the device mainboard, so not something you can nec

>I imagine backing up might not be as easy an option without tearing down the device as the memory chip is no the device mainboard, so not something you can necessarily do on the side of the road or at a border Oh you sweet innocent child. US Customs and Boarder agents, every federal agency, and most local law enforcement agencies all have Cellebrite, Oxygen, or an equivalent tool which can perform a full device extraction on basically any phone expect for a pixel running Graphene OS with the current updates and a new model iPhone also running it's current updates. Every other phone on the market in the US can be cracked and extracted by cellebrite simply by plugging in a usb-c cable. Even a stock pixel, Samsung, iPhone, etc. Typically they would absolutely need a warrant to perform a device extraction but the supreme court has ruled that at boarder crossings, a person is not actually in the US until allowed entry by an agent and by not being in the US, US law and constitutional rights dont apply. If you are a US citizen, they can not deny you entry but that can keep your phone and attempt to extract it at a later time when exploits may be uncovered to break the encryption or bypass it completely