Can i activate my iphone 4 that is verizon with At&t?

I recently bought an iphone 4 from a friend and its verizon, but i have at&t phone service. Is there anyway i can get this to work? That is cheap and won't ruin my phone.let me know.

No. The two companies are not compatible with their networks and hardware. You either need to get service from Verizon or get your money back.

No, they use completely different frequencies.

No.At&t requires a sim card and verizon iphones don't have a sim card tray, because verizon doesn't use sim cards