Device guides for

Apple Watch Ultra 3

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Set up mobile data on your Apple Watch Activate your Apple Watch Charge battery Turn your Apple Watch on or off

Getting started

Basic functions

Calls and contacts

Messaging

Apps

Connectivity

Troubleshooting

Specifications

View EID number

The EID number is your Apple Watch's unique eSIM identification number which is used when contacting the service provider, eg. during eSIM activation.