I want to know how to change the iPad cellular device

I used to use the first generation of iPad Pro Cellular.

I'm thinking of changing it to the new 3rd generation.

If I want to change the device, should I change the one I plugged in before USIM?

Or should I go to the carrier and let them know that something has changed?

I was wondering if it's as simple as a cell phone.

1140 2018-12-26 Gentleman

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