I think the smart miles service is average, I have had 3 black boxes from the company within a year due to them malfunctioning and not sending information, it also takes the company months to tell me it has malfunctioned meaning I?m not sending information. I have also emailed countless times about my information to put into my app for the smart miles box but never received anything back. I do believe they are a helpful thing to get as a new driver as they help you with your speeding, breaking, and times that are best for you to be home or out. It also helps to make your insurance significantly cheaper if you have been a good enough driver within the year before your insurance renewal. So I would recommend smart miles even though I have experience a few problems.