Do I need Wi-Fi for my iPhone 4?

Okay, I'm getting an iPhone 4. I don't have Wi-Fi right now. (I'm using my aunts computer) Do i need Wi-Fi to download apps?

You'll have to pay for the internet i think

Yes, of course you need Wi-Fi to download apps

No, you need any type of service like 3g. You will need Wi-Fi to download certain games(it will tell you) but for most games, no. You just need service.

You can download apps without Wi-Fi and without plugging it in to the computer if it's under 20 mb