Sometime soon you’ll be able to summon Flammie on the go. And you won’t need a drum to call him. Square Enix has a Secret of Mana port for iPhone and it’s coming out this month.
This port has a slightly different interface with items and elementals on the right. The controls, like most iPhone games, are mapped to a virtual gamepad on the touchscreen.
I suppose this isn’t a "secret" anymore, but if you max out an element beyond level eight there’s a chance of casting a supercharged spell. Powered up spells have different animations like a tornado blast when you cast Air Blade, a smiling mud ball for Earth Slide or a subtle double drop when you cast Cure Water.