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Does any iOS device require one at all? The iPhone works fine without data and I’ve been without a data plan on a few occasions.

• rdouble 15y ago
  Only if you want the subsidized price... or data.
• mikeash 15y ago
  The iPhone required one in the US, in the sense that you had to sign up for one when you bought it. That's no longer the case, if you're willing to spend $600+ on an unlocked one.