Depending on the version of your Android,
download mode may look different.
So you may see this blue screen.
You may see the older screen, where it looks like the Android
standing on the device.
Download mode is required for physical acquisition.
Now I just told you physical acquisition
is most often a dying trend.
However, where this is important is if you're
doing covert operations.
You're going to see here where this says "ODIN MODE."
And do you notice how it says SYSTEM STATUS: Official,
CURRENT BINARY: Samsung Official?
If you do a physical acquisition of an Android,
it is going to change that from "Official" to "Custom,"
which means someone will know that you did forensics
on that device.
Anyone can Google how to put their Android
device into download mode.
If you do this on your personal device,
and you see that it's custom, that's weird.
That means someone or something touched and modified
that device.
So be very, very careful for it.