The technical specifications of the successor to the large-screen Lumia 1320, which is tentatively known as Lumia 1330, have surfaced through a new leak.

According to the spec sheet shared by NokiaPowerUser, the Lumia 1330 will sport a 5.7in 720p display. It will use the Snapdragon 400 chip with a quad-core processor and paired with Adreno 305 graphics unit.

The phablet will have 1GB RAM and 32GB internal storage. There will be a 14 megapixel PureView camera and a five megapixel front-facing camera.

Another key feature is the Windows Phone 8.1 Update 2 or, GDR2 operating system.

Based on a note with the Windows Phone 8.1 model at the Bluetooth SIG, which has been removed now, the Windows Phone 8.1 Update 2 will bring MAP (Message Access Protocol), which allows a smartwatch to access text messages. Also included in the new update is the HID 1.1, which might bring Bluetooth keyboards, HOGA (HID over General Attribute Protocol), which enables smartphones to interface with accessories, and lastly, the Absolute Volume Control support.

Microsoft is expected to make an announcement about the Lumia 1330 at the next Mobile World Congress event.

The Lumia 1330, earlier in November, with Microsoft branding was spotted in a photo leak. Besides, Adduplex database had references of this device family, which are RM-1062, RM-1063 and RM-1065.

The Lumia 1320 packs a 6in screen with resolution similar to the Lumia 1330. The dual-core Snapdragon 400 processor is the power house of the smartphone, which has a five megapixel rear camera and a VGA quality camera at the front.