can the Apple watch series 3 be used with a CSpire iPhone 7 Plus?

I've used a series 1 before but I would like the series 3 with the cellular option.
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It would not slow the watch down.


When activated on your iPhone's service plan, the built-in cellular capability on Apple Watch Series 3 (GPS + Cellular) enables certain features to remain available when using your Apple Watch away from the paired iPhone, when they would not be available on other models.


The functions that are available on your Apple Watch when it is away from your iPhone depend on various factors including:



Features and requirements that apply under various circumstances are detailed here, including within the footnotes:


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