Some Apple Watch Series 3 Owners Facing LTE Activation Issues [Updated]

Apple Watch Series 3 models are being delivered across the United States and the rest of the world today, and as customers start attempting to activate their new LTE devices, some of them are running into serious setup issues.On the MacRumors forums, several AT&T customers have received messages stating AT&T is not supported. Support reps seem confused about how Apple Watch activation works, with one rep telling MacRumors reader KG87 that his watch needs a new number.
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