How to close background apps?

[hopmedic]

I've noticed some apps will "resume" when you launch them from that "running" app list, and some just load right up from where they left off. Angry Birds just loads right back up. Also the Physi Nibbler and Physi Blocks do that too. So are they actually running full bore in the background if you don't actually quit them? When I resume Angry Birds it actually resumes to the pause screen, but those other two games pop right in where I left off. Since they are ad supported I wonder if they are still pulling down junk in the background?

It depends. If the developer wrote it to run under lock, then it's running. If not, then it's suspending and recovering. Part of the fast resume (don't remember off hand what it's called - maybe it is fast resume) the dev can choose whether an app starts from the start each time, starts where it was last, or something in between. But if it's running under lock, it's using processor time when you think it's not.

 

[gorc23]

It is possible to close all open apps at once. Only few quick clicks on back button are needed.

 

[Ben Lemieux]

With the new update you should be able to do this.