Can an Iphone 4 be used with verizon?

AT&T screwed us over big time. And I mean big time. I will never use them again. Can we take our phones to a different company like Verizon? Just get a different sim card I guess? The company not only sucks, but we can't hardly use our phones anywhere, there's no signal. My friends with Verizon don't have this problem

Yeah dude

Verizon has a deal right now. Free iphone 4 with a new contract. (They told me that on Saturday). But Verizon is EXTREMELY expensive for what they offer. I used to have T-Mobile and I'm considering going back. I do drop calls with Verizon. I've had false data overage charges with Verizon. They've charged me reconnection fees of 15$ per line when I was not disconnected! I never had these problems with T-Mobile.

Your AT&T iPhone 4 can't work with Verizon you can use T-Mobile instead

You can't use a att iphone 4 on verizon.
if your in PA email me, i have verizon iphone for sale or trade