Connecting watch to cellular
I have a new Apple Watch and the cellular will not connect. I went to an AT&T store today and the employee was getting a message that the EIN was invalid.
Apple Watch Series 4, watchOS 5
Question marked as
First check you have the cellular version, there should be a red ring on the Digital Crown. Next check exactly which model you have, see Identify your Apple Watch - Apple Support (hopefully A1975 or A1976 USA model for AT&T). If these points are correct, where did you buy the watch? Could it be supplied through and locked to a different network?