Apple watch reminder issues - Apple Community
discussions.apple.com › thread › 8052983Aug 30, 2017 · Close certain apps and restart both your iPhone and your Apple Watch: Close the Watch app, Reminders app and Calendar app (if open) on your iPhone: Double-click the Home button, then swipe up on each app preview to close the apps. Restart both devices, turning both off together, then restarting your iPhone first: Restart your iPhone, iPad, or iPod touch - Apple Support; Restart your Apple Watch - Apple Support