Windows Phone 8.1 on the Lumia 925 and 1020 not only introduced awesome new features such as a notifications screen, it also brought with it stability issues, and now Microsoft has acknowledged this



From Neowin:

If you are a Lumia 925 or 1020 owner and in the Developer Preview program, then it's likely that you already have Windows Phone 8.1 on your device along with an annoying problem that causes both models to freeze under certain conditions.

The only known workaround for now is by setting detailed status (for apps like Weather and Calendar on the lockscreen/Glance) to none, as well as disabling the lockscreen password and reducing the Glance active state to 30 seconds if set higher.

  Microsoft confirms WP 8.1 freezing issues with Lumia 925 and 1020; patch on the way