How is Amazon’s first smartphone selling? According to a new estimate from Charles Arthur at the Guardian, not well. Combining web usage data from Chitika and data from ComScore, he estimated an upper limit of 35,000 Fire Phones sold and in current usage.

It’s impossible to confirm whether Arthur’s artificial estimate is actually in the right ballpark, because Amazon does not release sales numbers. But if the figure is close, it would also suggest that Amazon sells very few on-contract phones through its website, even those made by other manufacturers like [company]Samsung[/company].

Although [company]Amazon[/company] does not release sales numbers, it does publish hourly updated lists of top-selling products in various categories. Take a look at Amazon’s bestselling contract cell phones: the 32 GB Fire Phone is in first place, as it has been since launch day. But flip over to the chart for best selling electronics in general, and you won’t…