Techin5 have been looking at public review ratings (from the websites of AT&T, T-Mobile, Sprint, Verizon and Amazon) in order to assess consumer satification with Windows Phone. The results, given the methodology, can only ever be indicative, but they do seem to re-inforce the idea that consumers who actually try a Windows Phone device are finding a positive experience.

Techin5's overall findings are summarised in the below; the full details are available here.

• AT&T - two of five devices in the top ten; average rating of 4.5/5
• Sprint - one of one device in the top ten; average rating of 4.5/5
• T-Mobile - three of three devices in the top ten; average rating of 4.73/5
• Verizon - one of one device in the top ten; average rating of 4.5/5
• Amazon US - six of ten devices in the top ten; average rating of 4.58/5 
  

Techin5's informal data compilation chimes with what Microsoft and its handsets partners have been saying about the high net promoter scores (NPS) of Windows Phone smartphones. NPS measures the likelihood of a consumer to recommend a product to a friend and is seen as a way of measuring consumer satisfaction. 

NPS (customer satisfaction) is an important measure because it is seen as good predictor of sales growth. This is because, in part, it can offer an early signal of increased sales due to positive word of mouth.

And that is important because it is still early days for Windows Phone, with the debate on how successful the platform will be still wide open. Device shipments numbers do not tell us very much at this stage. Windows Phone devices sales are, of course, much lower in a direct current comparison with Android or iOS. However, the sales numbers of each platform are broadly equivalent to each other, when compared to the same stage in their respective life cycles.