Does FaceTime use up minutes on iPhone 4 or 4s?

Does FaceTime use up minutes on iPhone 4 or 4s?

Nope [:
You just need Wi-Fi or it won't work

Nope! It only works on Wi-Fi though so make sure you have that working

No, it relies on data access. Carriers are allowing FaceTime off Wi-Fi as well now, assuming you are on iOS 6 and depending on the carrier which plan you are using.

No it does not.
It will only use up your data plan.

No. It will use data if used over 3G/4G though.