I just got a an iPhone 4 from Walmart?

It is a straight talk one. In the left corner it says TFW 3G. What does that mean? Will my internet still work? There's no where to put a SIM card so i don't know what to do…

If there's no sim card then yea it should work because straight talk is the best one and if it dosent work then go back to wallmart and the guy will set it up for you that is how i got my iphone 5

The internet will not work if you don't have a SIM card, it will only work if you're in a place with internet. If you're going out somewhere, the internet will not work.

And I didn't know Walmart sells phones.
Wow, I really needa get out more. Just kidding. My house is my fortress of solitude in which I read and eat chips ahoy all day-- the red ones, of course. There's no way I will voluntarily leave the house.