Will an iphone 4 work with iwireless service?

I have an iphone 4 with no service provider right now and a cell phone that uses iwireless. Can I transfer my sim card to a micro sim card and put it in the iphone? Will the iphone get service?

No that iphone 4 is locked and can only be used with its own cell phone carrier. It will not work on iwireless.

It should as long as the phone is unlocked.