I don't understand why my FaceTime wont work on my 4s. I have unlimited Internet and data.
Is this on wifi or cellular data?
It should work on wifi, but in order to use it on cellular data, you will need to contact your cell phone provider.
If you're referring to cellular, only AT&T has turned it on ONLY for LTE-devices, which is the iPhone 5.
Ask your carrier. The decision to support or not support facetime over cellular data is up to the carrier.
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