[worik]

Nothing, practically speaking, can keep you safe from your phone.

If your adversary has access to your phone, directly, then encryption will not help (practically speaking - got to keep saying that because heroic efforts can be expended). If that adversary is the phone manufacturer (a) you are screwed and (b) the manufacturer is taking a huge business risk

Point is using Signal your messages and secrets cannot be found on a server over which you have no control. You do have control over your phone. You can switch to a more reputable manufacturer, you can keep it away from your adversary

[wolverine876]

> If your adversary has access to your phone, directly, then encryption will not help

One way to express it: The phone isn't much use unless you have access to the data. If you can access it, so can adversaries with access to your phone.