I think it's time for phone manufacturers, at least the few unknown ones that care for users privacy, to implement plausible deniability in the form of two or m

I think it's time for phone manufacturers, at least the few unknown ones that care for users privacy, to implement plausible deniability in the form of two or more bootable systems where one is the main one and the others boot would be triggered by a special password, so that they would not contain certain phone numbers, messages, etc. and anything installed there wouldn't have access to other partitions/systems. The system should be clever enough to let some innocuous information slip from other systems. For example, let's say a border guard asks me for a password and I give the one that boots the system I'd use when travelling, with no other stuff than a few family photos and cat videos, if he checked the phone calls he would immediately spot that I didn't make a phone call (with that system) in one month or more, which would immediately raise alarms, so there should be a way to tell the other systems to slip in there some information like phone calls to relatives or the restaurant, chats with girlfriend, etc. just so that one could pretend that the system was used daily.