Microsoft has added another Windows Phone to the Bluetooth certification process, the Lumia 1520 ("Lumia 1520 Bluetooth update to WP8.1"). This phablet joins the Lumia 930 and Lumia 630, all certified for Bluetooth 4.0 LE to take advantage of connected hardware without sacrificing heavily on battery. The company had Windows Phone 8.1 itself certified earlier this year.
While support already implemented came from Nokia on top of Windows Phone 8, Microsoft is now ensuring every handset running Windows Phone 8.1, which is capable of Bluetooth 4.0 LE, will be supported. Those who backed Microsoft's mobile platform have patiently waited for updates to arrive, which would enable companies like Fitbit to release official apps and provide reason for consumers to switch to Windows Phone.
Source: Bluetooth SIG, via: WMPU
