Does System.gc() work on iOS?

I'm trying to force garage collection in my iOS app, but am not convinced that System.gc() does anything. I've read all the posts about how to use it, have also tried calling it twice:
System.gc();
System.gc();
However from testing it's not apparent that this has any effect.
Can anyone confirm whether or not garbage collection works on iOS? If not, what are options for cleaning up? Are there any?

What you may consider garbage, iOS may not. Cache is still relevant at all times. As long as you are very careful about cleaning up all references to objects when you don't need them (including listeners, etc) then you don't need to worry about trying to force a garbage collection. Once iOS knows it needs more ram (play a video, load a large PDF, etc) it will perform its own GC. GC will also not solve any problems of failing to dispose of objects properly.
If you have Flash Builder Premium with the profiling you can watch your app and you will probably notice when you call gc() it does nothing, until you do something else that requires that memory. Until iOS would rather cache it in memory for speedy recovery rather than dump it. This is very normal nature.

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Does System.gc() work on iOS?

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