After months of speculations, Microsoft on Thursday (4 September) officially unveiled Lumia 730 Dual, 735 and 830 smartphones at the ongoing globally acclaimed electronics exhibition, IFA (Internationale Funkausstellung Berlin) 2014, Germany.

Nokia Lumia 730 and Lumia 735
IFA 2014: Nokia Lumia 730 Dual, Lumia 735 UnveiledConversations.Nokia

The new Nokia Lumia 730 Dual sports a 4.7-inch HD display ClearBlack OLED screen with Corning Gorilla Glass 3 shield and comes shipped with the latest Windows Phone 8.1 OS (with Lumia Denim update) powered by 1.2GHz Snapdragon 400 series quad-core processor, 1GB RAM, 8GB inbuilt memory and a high-capacity 2,220 mAh battery, which can run up to 22 hours talk time and close to 25 days under standby mode.

On the other hand, Lumia 735 packs identical specifications in terms of looks and internal hardware seen inside the Lumia 730.

The only difference between the two is that the former boasts of Nano SIM (single slot) and has wire-less charging ability.

Nokia Lumia 830
Nokia Lumia 830 unveiledConversations.Nokia
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Whereas, Nokia Lumia 830 is a bit higher-end, compared to the other two smartphones. It sports bigger 5.0-inch HD (720x1280p) ClearBlack OLED screen with Corning Gorilla Glass 3 shield and metal frame around the edges. It also boasts of 10.0-megapixel PureView camera with Carl Zeiss lens and HD front camera.

The company has confirmed that Lumia 730 Dual, Lumia 735 and Lumia 830 will be made available to the global markets this September for €199 (around $261/₹15,770), €219 (around $288/₹17,355) and €330 (around $433/₹26,200) respectively.

Key Specifications of Nokia Lumia 730 Dual, 735 and 830:

Model Nokia Lumia 730 Dual Nokia Lumia 735 Nokia Lumia 830
Display 4.7-inch HD (720x1280p) ClearBlack OLED screen with Corning Gorilla Glass 3Pixel density: 316 ppi (Pixels per inch) 4.7-inch HD (720x1280p) ClearBlack OLED screen with Corning Gorilla Glass 3Pixel density: 316 ppi (Pixels per inch) 5.0-inch HD (720x1280p) ClearBlack OLED screen with Corning Gorilla Glass 3Pixel density: 296 ppi (Pixels per inch)
OS Windows Phone v8.1 with Lumia Denim update Windows Phone v8.1 with Lumia Denim update Windows Phone v8.1 with Lumia Denim update
Processor 1.2GHz Qualcomm Snapdragon 400 series CPU 1.2GHz Qualcomm Snapdragon 400 series CPU 1.2GHz Qualcomm Snapdragon 400 series CPU
RAM 1GB 1GB 1GB
Storage capacity 8GB, expandable up to 128GB 8GB, expandable up to 128GB 16GB, expandable
Camera Main: 6.7-megapixel camera with Carl Zeiss lens, LED flash, 1/3.4-inch sensor, 26 mm camera focal length, f/1.9 aperture

Front: full HD 5.0-megapixel wide-angle camera with f/2.4 aperture

 Main: 6.7-megapixel camera with Carl Zeiss lens, LED flash, 1/3.4-inch sensor, 26 mm camera focal length, f/1.9 aperture

Front: full HD 5.0-megapixel wide-angle camera with f/2.4 aperture

 Main: 10.0-Megapixel PureView camera with Carl Zeiss lens, flash, 1/3.4-inch sensor, 26 mm camera focal length, f/2.2 aperture

Front: HD 0.9-megapixel wide-angle camera with f/2.4 aperture
Battery 2,220 mAh;Talk time: up to 22 hours (2G) & 17 hours (3G)Standby time: close to 25 days 2,220 mAh;Talk time: up to 22 hours (2G) & 17 hours (3G)Standby time: close to 25 days 2,220 mAh;Talk time: up to 12.9 hours (2G) & 14.8 hours (3G)Standby time: close to 25 days
Network 3G 3G & 4G-LTE 3G & 4G-LTE
Add-ons Dual-SIM slots, Bluetooth v4.0, Wi-Fi, NFC, FM radio, USB v2.0, Nano-SIM (single slot), wire-less charging ability, Bluetooth v4.0, Wi-Fi, NFC, FM radio, USB v2.0, Nano-SIM (single slot), wire-less charging ability, Bluetooth v4.0, Wi-Fi, NFC, FM radio, USB v2.0,
Dimensions 134.7 x 68.5 x 8.7 mm 134.7 x 68.5 x 8.9 mm 139.4 x 70.7 x 8.5 mm
Weight 130.4 g 134.3 g 150 g
Colours Black, orange, white and green Black, orange, white and green Orange, green, white and black
Price details (excluding local taxes) €199 (around $261/₹15,770) €219 (around $288/₹17,355) €330 (around $433/₹26,200)