WPJaipho is plugin which adds mobile optimized look & feel to your WP based galleries.
It is based on the original Jaipho, iPhone optimized Javascript gallery and it works on iPhone, iPad and Android devices.
WP Jaipho works with: NextGEN 1.x Gallery and Default WP Gallery (via Media Library). It also works flawlessly with some mobile theme plugins such as WPTouch and WordPress Mobile Pack.
Simple enough – just activate the plugin, and all your galleries are automatically transformed into mobile optimized gallery, which is visible for mobile users only. Check out demo here with your iPhone.