I don't mean AUTO SLEEP where the screen turns off after 10 seconds nor do I want to set a password which autolocks the device and prompts for password.

I want the phone to lock automatically (without the need for password) when I stop using it for a minute. Can this be done?

Too often the phone sleeps (screen dims to black) but stuff can still be opened or turned on with a quick press of a key or touch to the screen when I forget to lock it and the phone is in my pocket or bag.

My 9700 and 9780 used to have this autolock function but I can't seem to find it on my 9790.


Thanks.