Poor app design with restore function not working: if you reinstall SamWearable or reset your phone, you won't be allowed to pair with the previous band w\o reseting it (despite pairing to the same device before reset). If you reset it, the restore option might deliver the last month data not the 5 minutes ago back-up. I have a tplink smart bulb that allows me to keep previous data w\o reseting the device - and it works every time. App does not allow the user to opt out from location access.