Palm Centro Smartphone, please help...?

[tVeet]

To turn off Keyguard, do the following:
1. If the screen is off, press Power/End to wake up the screen.
2. Press Center to turn off Keyguard. (To turn on Keyguard,
press Option and then press Power/End .)
You can change how quickly Keyguard turns on, or you can disable
the feature altogether. To change the Keyguard settings, do the
following:
1. Press Applications and select Prefs .
2. Select Keyguard.
3. Select the Auto-Keyguard pick list, and then do one of the following:

Select how quickly you want Keyguard to turn on: When power is turned off,
5 seconds after power off, or 30 seconds after power off.
Select Disabled to completely disable the Keyguard feature until you turn it on again.
4. Select Done.

[April]

Does this phone have some sort of lock on it or something to that affect so that when you out it in your pocket you won't accidentally end up calling someone or something...?

Now i found this article but am still a bit confused...

One frustration was the keyboard lock. Every time I wanted to make a phone call, I'd have to press the power/end-call button; then press the 5-way navigation button (the big one in the middle of the face of the phone) to unlock the Centro, because the Centro would lock every time the power went off; and the power went off at the end of every call. Good for battery life; bad for getting to start your next call. After days, I realized that I could set it so it doesn't lock immediately after each call.

What is it saying, that the keyboard locks itself after making a call, and only then? And that it turns the phone off after a call? Or is there another way to lock it, or what?
Im so lost, haha. Please help?