Set wallpaper and lock screen's background as two different photos? Current when I choose a photo to be set as wallpaper, my lock screen's background is automatically changed to be this new one.

I want the lockscreen to keep its old background, how can I do that?

ps.

I'm using Google Samsung Galaxy Nexus.
Although I am on another device with another android version (HTC Desire HD / ROM: JellyTime R9, Android 4.2.2) I think the problem may be the same.

In the Gallery app I can only set the images as background. But I can set a different lock screen background image in system settings. I think this option depends on the specific Launcher/Lockscreen you use and are also valid in stock roms. I am using NovaLauncher and I can only set a different lockscreen image that way as far as I know.

Look in Settings &rarr; UI &rarr; Lock screen &rarr; Background &rarr; Custom image (maybe different wording &mdash; I only have the German version here).