nokia 3310 to 3315 where's autolock?

Hello there,

Tonight i upgraded my 3310 to a 3315 using knok phoenix convert 3310 to 3315
option. The feature i was after was the ability to autolock the keypad so
that it stops dialing everyone when it's in my bag! The upgrade appears to
have gone to plan, but i cannot find anything about autolock anywhere in the
menu?

Interestingly enough, in oxygen mobile phone manager II it is now showing up
as a 3330 !

Can anyone tell me whats going on, and where the autolock is / how can i get
the autolock?

Thanks!
Melissa