Set phone on silent and vibrate

[rynoab]

I recently switched over from an EVO 4G to an iphone 5. On the EVO, you could turn the phone from silent to vibrate to ring. On my iphone I cannot do that. I understand that I can make the phone vibrate while its on silent and/or while its on ring. However, is it possible to set it up so the toggle switch is down, it is on silent and will not vibrate, and when the toggle switch is up, it will ONLY vibrate? Currently it vibrates and rings but I want to simply have it only vibrate while in that mode. Part of my confusion is when it has the ringer and has a speaker versus just a bell. Im confused by which each option does.

Thanks.