Rigid body simulation didn't work!

When I am using smartphone rigid body simulation it can’t fall, stand straight
And I also changed the collision shape to mesh it can’t work
I have no idea can anyone tell me what’s going on. Thanks

We see that it doesn’t work but we know nothing about your setup ! How did you do it? A quick test with a cube and a plane, both adding rigid body with menu object add active and passive works pretty easy without further doing.

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I made a mistake and, I did not apply the scale of those objects
But thanks for the reply