The Garmin Sleep Monitor doesn't properly pair with either iPhone or iPad. The Garmin Connect App recognises the sleep monitor, but when clicking "set up" it gives continuously the same error message "cannot add accessory". I tried of course all the usual trouble-shooting suggestions like plug/unplug, restart, updates... The breastband for running I bought at the same time connects flawlessly. Hence, both iPhone and Garmin Connect App are working. I even exchanged the sleep monitor for a different one at the shop, and still the problem continues. Quite disappointing.