Would rate lower if I could. First sensor had on for over 7 hours and I couldn't get out of the tutorial of the App. Not scanning at all and yes my phone is compatible. Customer services solution was to buy a new sensor did that, same thing, Costumer service is now closed I haven't even gotten the pleasure to enjoy the alarms... In 16 hours, Libre 2 has equaled 7 finger sticks, 4 downloads and logins to the app, and a free 14 day trial that cost me $80. Dexcom here I come.