30 seconds. Can sometimes be a pain but a bit more secure.

30 seconds on a 12 mini. More to be easy on the battery, but I should probably just be more aggressive about locking it myself.

Mine is set to Never (turn off).

Is this feature available because people are stealing I phones and it deters theft because people won't steal a phone that they can not use ?

Yeah, that’s one reason, but a lot of people use Apple Pay, and have banking apps on their phone. Even though those apps have their own passwords, it’s an extra layer of security. If someone picks up your iPhone, it’s nice to know it’s locked. If nothing else, it gives you more time to erase it.

Always set to one minute, unless I’m having a video call with my doctor as their software doesn’t keep the browser open. Then I set it to indefinite. It’s immediately changed back.

Years ago I worked for a company that was very security conscious. I never set my phone down without locking it. Same goes for my computer, locked the moment I step away. It’s simply habitual at this point, and with FaceID there’s no reason not to.

Pixel 8a -- 2 minutes.