[Pbear74]

Has anyone ever seen this, when I turn on my phone and unlock it all the tiles are blank and stay like that for a few seconds before showing the correct content.

[Ankit Diwan]

Yes..me too face this prob..
Dnt knw the reason behind it..

[spaulagain]

Yup, I've had this issue ever since I went to Dev Preview. Are you on the preview?

[Pbear74]

I am on DP and I'm not sure that this started before or after I joined. This happens on both my 920 and 635 btw.

[spaulagain]

I just upgraded my Lumia 520 to Cyan through the standard path and it has the same issue. I think this is an inherent bug with 8.1. I really hope it gets fixed in Windows 10 or earlier. It's actually quite embarrassing how bad it is sometimes.

[SpaceyO]

Are you using the Live Lock Screen app?

[P1ng0fDeath]

often happens on my 520 as well, usually when I'm using a background image instead of plain color tiles. Currently using 3 columns. don't know what causes this too, already tried reset

[spaulagain]

Are you using the Live Lock Screen app?

Nope, no background tiles, and no Cortana tile.

[Microsoftjunkie]

If you have alot of tiles, flipping, etc., and sometimes background pics, this will cause that problem. Also check which apps run in the background. Forgot which app that did that to me, but both cases did the same thing. 925 & 1520