Why my game is so god damn slow on Droid ?

I have a simple game, where there are about 30-70 very simple boy on the screen. The boxes doesn't even has a texture, just a simple color, and I use the mobile/Diffuse shader on all of them...

About 3 particle system, with 50/10 emission rate. 2 UI (new) element, but on the testing, both were disabled. And exactly one spotlight. The boxes are removed, as they goes out of the screen, to achieve this, all the boxes has a collider, and there is a giant Trigger collider around the player... (I didn't had a better idea for this) The game runs well on my PC, with 190-200 FPS, But when I compile it to Android, I can't get more than 25 FPS at all...

I switched off global lighting, set the quality to fastest, use the simplest shader on everything, yet I can't get more than 25 FPS... My scripts are optimized (well, not the best, they are still in development phase) But according to the profiler, the scripts aren't the issue...

So I ran out of Ideas... Any suggestion, what should I do to make it run faster ?