Xbee Wifi iPhone

i want develop a system that permit connect the arduino to a PC and an iPhone at the same time. In other words, i don't want any physical connection, only wireless. I'm not sure if is possible because i think that 802.15 and 802.11 work in diferentes frequences. For exemple, create a small program in android to re-programing arduino, by wireless, not bluetooth.

Can you help me?

You'd have to share far more information about your project if you expect any appreciable help.

Of course that sounds entirely possible, but the devil is often in the details. So more details are called for ;)