Getting a new iPhone
Move to your new iPhone with Quick Start, or restore it from an iCloud backup, and everything in Why Not comes with you: every run with its map, splits and heart rate chart, every Read and share card, your trophies and PRs, your plan, your settings and your reminders.
WHOOP needs one tap. Its sign in stays with your old iPhone, so Home shows Reconnect WHOOP on this iPhone. Tap Connect and log in on WHOOP. If the new iPhone asks for Apple Health or notifications, tap Allow, as you did before.
Set the new iPhone up as new instead and sign in with Apple: your account brings back your plan, PRs, trophies and totals, and Apple Health brings back the last 30 days of runs.
Still using the old iPhone too? Each keeps its own copy. When your plan changes on one, the other shows Your plan changed on another iPhone. with Use the newer plan and Keep this one.