ComScore’s latest report for the month of September shows Windows Phone smartphone subscriber base growing by 0.2% for the period of June to September in the US market. In September 2014, Windows Phone has 3.6% of US smartphone user base of 174 million, which means, 6.26 million Windows Phone users.
This also means that from June to September, Windows Phone smartphone user base has grown by 408,000 new users in US.
Interestingly, Android user base has shown a growth by similar number of users, while Apple has declined by double the number of users for the same period of June to September. BlackBerry shows a decline, while Symbian shows some growth.