Net10 on a iphone 4? Is it possible? Gsm & cdma?

Okay so i just got another iphone, this one was free its an iphone 4 for sprint i was using att on my 3gs for the longest, and i'm trying to find a good cdma prepaid service that i can connect it to without it being outrageous every month. I was doing some research on net10 and it says its both? How i don't know… Is net10 good and can i even connect it to net10 since its a iphone i think you can with most prepaid services.

Since the iPhone 4 is from Sprint, it can't be unlocked and it won't take any SIM as it has no SIM slot. So you've to get the phone flashed to Net10 for their CDMA services. Check online for flashing iPhone 4 to Net10.