Amazon calculates a product's star ratings using a machine learned model instead of a raw data average. The machine learned model takes into account factors including: the age of a review, helpfulness votes by customers and whether the reviews are from verified purchases.
Excellent phone will all the latest bells and whistles but is not compatible with android playstore. This might be a deal breaker for many. For UAE buyers there are very limited number of local apps that could be installed. No banking apps available. Just take a note of the above before spend USD 1000+ on this phone.