Originally Posted by
Biggs91276 Question guys I just paired my apple watch to my 6s plus and also updated it to watchos 3.0. When u receive my 7 plus will I have to unpair it from the my 6s plus to be able to pair it to the 7 plus and will I have to re-download watchos 3 on the 7 plus?
Here's how to switch phones with your watch... First, unpair the watch from the 6s+... then, backup the 6s+ to iTunes or iCloud - if backingup to iTunes, make sure you select the option to encrypt the backup... Then, set up the 7+...restoring the backup of the 6s+...then pair the watch to the 7+ - you'll be where you were with the watch on os3, and all the data, etc. as it was with the 6s+
https://support.apple.com/en-us/ht205189