At&t Iphone with Verizon Plan?

Okay so I have verizon but my friend is giving away her old iphone, and she has at&t. Is there anyway that the Iphone could work for me because I have verizon?

I'm not an expert on the matter, but AT&T requires SIM cards for their phones including the iPhone, however Verizon doesn't require one nor need one. I wouldn't count on them working across different networks. You may need to acquire a Verizon iPhone.