Used Verizon iPhone 4 need data?

I'm about to buy a used iphone 4.it has no service or a data plan, but it was made for verizon. So i'm wondering if i can just use it as a regular phone with just call and text, because i don't have a data plan. I do have a phone right now so how can i put my number on the iphone? I'm buying it for 170. Good deal or should i wait for the 4s?

Added (1). The phone i have right now is from verizon

If you activate any smartphone on any major carrier you will be charged for data. It's as simple as that.

Which iPhone is it? What size? 8, 16, 32 GB or what? If you signed up with Verizon you could get a new iPhone 32GB for a bit more than that.

"should i wait for the 4s?"

The 4s has been out since last Fall. Why do you think you'd have to wait for it? Did you mean iPhone5? Are you incapable of waiting till next October?

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