Here’s a sneaky (and welcomed) little change that a few of you have tipped us on. It seems yesterday’s AT&T Lumia 920 firmware update, which will be going to other Lumias in the near future, is also sporting a few changes for the display time-out (found under Settings > Lock Screen).
Currently, some users on a few Windows Phone have only four options: 30 seconds, 1 minute, 3 minutes and 5 minutes. The choice determines how long your device will sit idle before the screen powers off (we opt for 3 minutes ourselves mostly due to photo and video shoots). Now, with the 1308 firmware for AT&T new timings have been added including 15 minutes, 30 minutes and Never.