Can I put a passcode on a Nokia N97 mini?

I want to put a passcode like you can have on apple devices on my phone. I'm using my Nokia N97 because I had my iPhone stolen at school and I don't have enoght money to get a new one yet so I was wondering how I put a pass code on it like I can have on my iPhone please help thanks

Go into your phone settings,
security settings, phone
and sim.
Scroll down to lock code.
To change the code to your
own, select it, and it will ask for the default lock
code which is 12345. Once
confirmed, it will ask u for
your new code which can be
4 or 5 digits. Pick
something you won't forget. Then it will ask you to
confirm it.
Done.
Now if your phone has an
autolock feature, you can set
it by selecting it and selecting user defined and
set a time, like 10 or 15
minutes, up to you. Your phone
will lock after that set
time of inactivity. You will
still be able to take calls, but need to put the code
in to do anything else.
Code will be requested
each time u turn your phone
on.
Depending on your nokia, you may have remote lock
feature. With this, u set a
password, and if your phone
is stolen and your worried
that it hasn't autolocked, u
can send that password to your phone from any other
phone by sms and it locks
it.
you may also have the
feature to have the phone
lock if the simcard is changed and you can enable
that too.
Finally, you have pin lock.
This locks your sim card,
even if a theif takes it out
and puts it in another phone, the code will be required to use your sim.
To change the pin code, its
the same as the lock code
change, but the default
code you need to put in first is different. Its
usually 00000 but if that doesn't
work, select cancel, and
call your service provider,
they will give you their sim
pin default code, and after uv done that,
select pin request on, and it will ask
for a code every time u
turn your phone on.
Its a good idea to make your
pin and lock code the same so you just enter
them consecutively on start up.
Hope that wasn't
confusing!