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key specs | ||||
Display (Primary) | 5.80-inch | - | ||
Processor | Qualcomm Snapdragon 888 | Qualcomm Snapdragon 400 | ||
Front Camera | 12-megapixel | 5-megapixel | ||
Rear Camera | 12-megapixel + 16-megapixel + 12-megapixel | 13-megapixel | ||
RAM | 8GB | 1GB | ||
Storage | 128GB | 8GB | ||
Battery Capacity | 4449mAh | 3000mAh | ||
OS | Android 11 | Windows Phone 8.1 | ||
Resolution | 1344x1892 pixels | 720x1280 pixels | ||
Display | - | 5.70-inch | ||
general | ||||
Brand | Microsoft | Microsoft | ||
Model | Surface Duo 2 | Lumia 640 XL Dual SIM | ||
Release date | September 22, 2021 | March 1, 2015 | ||
Launched in India | No | - | ||
Form factor | Foldable | Touchscreen | ||
Dimensions (mm) | 145.20 x 92.10 x 11.00 | 157.90 x 81.50 x 9.00 | ||
Weight (g) | 284.00 | 171.00 | ||
Battery capacity (mAh) | 4449 | 3000 | ||
Fast charging | Proprietary | - | ||
Colours | Glacier, Obsidian | - | ||
Removable battery | - | Yes | ||
display | ||||
Screen size (inches) | 5.80 | 5.70 | ||
Touchscreen | Yes | Yes | ||
Resolution | 1344x1892 pixels | 720x1280 pixels | ||
Protection type | Gorilla Glass | - | ||
Pixels per inch (PPI) | - | 259 | ||
second display | ||||
Screen size (inches) | 5.80 | - | ||
Touchscreen | Yes | - | ||
Resolution | 1344x1892 pixels | - | ||
Protection type | Gorilla Glass | - | ||
hardware | ||||
Processor | octa-core | 1.2GHz quad-core | ||
Processor make | Qualcomm Snapdragon 888 | Qualcomm Snapdragon 400 | ||
RAM | 8GB | 1GB | ||
Internal storage | 128GB | 8GB | ||
Expandable storage | - | Yes | ||
Expandable storage type | - | microSD | ||
Expandable storage up to (GB) | - | 128 | ||
camera | ||||
Rear camera | 12-megapixel (f/1.7, 1.4-micron) + 16-megapixel (f/2.2, 1.0-micron) + 12-megapixel (f/2.4, 1.0-micron) | 13-megapixel | ||
No. of Rear Cameras | 3 | - | ||
Rear autofocus | Yes | - | ||
Rear flash | Yes | LED | ||
Front camera | 12-megapixel (f/2.0, 1.0-micron) | 5-megapixel | ||
No. of Front Cameras | 1 | - | ||
software | ||||
Operating system | Android 11 | Windows Phone 8.1 | ||
connectivity | ||||
Wi-Fi | Yes | Yes | ||
Wi-Fi standards supported | 802.11 a/b/g/n/ac/ax | 802.11 b/g/n | ||
GPS | Yes | Yes | ||
Bluetooth | Yes, v 5.10 | Yes, v 4.00 | ||
NFC | Yes | Yes | ||
USB Type-C | Yes | - | ||
Infrared | - | No | ||
USB OTG | - | No | ||
Headphones | - | 3.5mm | ||
FM | - | Yes | ||
Number of SIMs | - | 2 | ||
Wi-Fi Direct | - | No | ||
Mobile High-Definition Link (MHL) | - | No | ||
sensors | ||||
Fingerprint sensor | Yes | - | ||
Compass/ Magnetometer | Yes | Yes | ||
Proximity sensor | Yes | Yes | ||
Accelerometer | Yes | Yes | ||
Ambient light sensor | Yes | Yes | ||
Gyroscope | Yes | No | ||
Barometer | - | No | ||
Temperature sensor | - | No | ||
ratings | ||||
Overall NDTV Rating | - | Read Review | ||
Design Rating | - | |||
Display Rating | - | |||
Software Rating | - | |||
Performance Rating | - | |||
Battery Life Rating | - | |||
Camera Rating | - | |||
Value for Money Rating | - | |||
sim 1 | ||||
SIM Type | - | Micro-SIM | ||
GSM/CDMA | - | GSM | ||
3G | - | Yes | ||
4G/ LTE | - | No | ||
sim 2 | ||||
SIM Type | - | Micro-SIM | ||
GSM/CDMA | - | GSM | ||
3G | - | Yes | ||
4G/ LTE | - | No |