I have an iwatch 4 paired to my iphone 13 Pro and i want to replace it and pair my new iwatch 8?
I have an iwatch 4 paired to my iphone 13 Pro and i want to replace it and pair my new iwatch 8?
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if it was me then I would take the following steps with the old What to do before you sell, give away, or trade in your Apple Watch, or buy one from someone else - Apple Support
and then pair the new one to your phone