[skillmaster19]

This may be surprising but the iPhone client is actually very efficient at particle effects. Era iPhone and Classic iPhone both have very amazing weather and particle effects. Look at the fireworks on both servers and the gas/explosion stuff on both. I think the Facebook client(through flash player) has a few limitations and is rather inefficient. On older devices like the iPod 1 and 2 try to use less complex effects to avoid low framerates.