Apple Watch 3 and iPhone 6+
Is there any possible way I can use my apple wstch 3 with my iPhone 6+
Apple Watch Series 3, watchOS 7
Question marked as
If it's running WatchOS 3 or 4 or 5 it can be paired with an iPhone 6. If its running WatchOS 6 or later then no, as that requires iOS 13 or later which the iPhone 6 cannot run.